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NFG Forums => RGB + Video Discussions => Topic started by: Shadow_Zero on September 24, 2003, 05:29:52 AM

Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on September 24, 2003, 05:29:52 AM
I've got a Gamecube RGB cable (this one to be precisely: http://www.logic3.com/?page=shop/flypage&p...afb17bd23cc5fae (http://www.logic3.com/?page=shop/flypage&product_id=254&category_id=&ps_session=b507351918e5805baafb17bd23cc5fae) )
and I'd like to use it with my PAL N64 and PAL SNES.
When I use it with those systems, the screen starts out ok but soon will fade away into black.
Now I've read something on the old forum that by removing the "capacitors" (whatever they are) could solve the problem. Is that correct? Is it easy to remove those capacitors?
And does the image really improve then with the SNES and N64?
How about the modifications? The website doesn't have any for a PAL SNES and N64, or don't these systems need modifications for RGB support?


Also, I have a Panasonic "Q" Gamecube connected via s-video to my tv (only composite and s-video are possible). Lan-Kwei has MODIFIED RGB CABLE FOR THE PANASONIC Q for $45 (see http://www.lan-kwei.com/gamecubeE/ (http://www.lan-kwei.com/gamecubeE/) ) and I was wondering if that's worth the buy or that I'm better off with my s-video. The Lan-Kwei RGB cable is connected via the Digital A/V out of the Q, does that improve quality over the standard connections or doesn't that matter?


Thanks in advance!
Title: SNES + N64 PAL RGB
Post by: NFG on September 24, 2003, 11:33:13 AM
You seem a bit confused about the advantages of RGB over S-Video.  Is it better?  Yes.  Is it worth it?  That's up to you.

The capacitors are indeed the problem, and by bypassing them you will make the cable work on your PAL SNES (but not a SNESjr).  They're the little cylindrical bits inside the SCART connector, cut them out and connect the two wires together.  I'm wondering though why you don't just buy a SNES RGB cable - hacking the caps off the GC one will render it incompatible with your GC.  The PAL N64 does not do RGB.  There is apparently an mod by a german company for $70, but no one cares enough to pay for it, it seems.

As for the Q, the cable they sell gives you RGB.  Whether it's worth it for you is entirely up to you.
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on September 24, 2003, 06:06:32 PM
Well yes, I know RGB is better than S-Video. At least that's what I read and hear everytime. Only haven't seen it with my own eyes yet  ;)
Though one friend of mine prefers S-Video over RGB for some reason...

Anyway, the reason I'd like to use this particular RGB cable is because it has an A/V block so I can connect the audio to my stereo. Also it gives me the ability to connect my NES on the same cable with composite.
I don't have a normal Gamecube, so it's no biggy to remove the capacitors (if I figure it out how to do it exactly).
But if anyone knows a SNES RGB cable with A/V block that might be an easier option.

But what happens if I use such a cable with the PAL N64? Because know the N64 reacts the same as the SNES. The image on my screen starts out fine, but then fades into black.

Also what's VERY odd is that I have used the same cable at my girlfriends place and it just works with the PAL N64!
How is that possible then? Or does her tv somehow transform the signal to standard A/V or something?
(I've got a Philips widescreen, she a Samsung widescreen).

Thanks for the info so far   :)


PS: I was under the impression that the Digital AV out of the Gamecube was only for connecting it to a monitor. Now is it also possible to connect a (modified) RGB cable to the tv?
Title: SNES + N64 PAL RGB
Post by: d4s on September 26, 2003, 08:13:25 AM
i picked up about 10 "broken" snes rgb cables cheap last week that actually were gc rgb cables in a box that claimed to contain snes rgb cables.
if you want to modify your cable,you may want to connect
all r,g,b,audio,sync and blanking signal grounds together
or it wont work on some TVs.
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on September 27, 2003, 08:13:31 AM
Quotei picked up about 10 "broken" snes rgb cables cheap last week that actually were gc rgb cables in a box that claimed to contain snes rgb cables.
if you want to modify your cable,you may want to connect
all r,g,b,audio,sync and blanking signal grounds together
or it wont work on some TVs.
I'm not much of an engineer or something, so I barely know what you're talking about    ;)

Does a digital RGB cable provide better quality a normal one?
I thought the digital A/V out of the Gamecube was only for connecting to monitors, can it also be used with tv's SCART (RGB)?
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on October 07, 2003, 01:33:18 AM
QuoteYou seem a bit confused about the advantages of RGB over S-Video.  Is it better?  Yes.  Is it worth it?  That's up to you.

The capacitors are indeed the problem, and by bypassing them you will make the cable work on your PAL SNES (but not a SNESjr).  They're the little cylindrical bits inside the SCART connector, cut them out and connect the two wires together.  I'm wondering though why you don't just buy a SNES RGB cable - hacking the caps off the GC one will render it incompatible with your GC.  The PAL N64 does not do RGB.  There is apparently an mod by a german company for $70, but no one cares enough to pay for it, it seems.

As for the Q, the cable they sell gives you RGB.  Whether it's worth it for you is entirely up to you.
I see the cylinders, but how exactly do I connect the two wires after I cut it off?

The SNES RGB cable for PAL systems seems to be a rarity. I don't know where to find one. But it doesn't matter much since I have a Q, so I don't need the RGB cable for a GC.

For a modified NTSC N64, do the caps also have to be removed or are GC RGB cables just fine?
Title: SNES + N64 PAL RGB
Post by: Guest_GREATFUNKY on October 12, 2003, 07:39:29 AM
VERY IMPORTANT NEWS ABOUT THE PAL N64 RGB MOD!!!!

I wanted like everyone who knows the famous mod ,
the RGB signal on my French N64 ... of course when you say "PAL N64"
everybody says :"IMPOSSIBLE".  
Everybody is wrong : Pal N64 support RGB mod and it's
EXACTLY the same mod as for NTSC.

This morning i was thinking i'm stupid to do that ,
i know the result but i opened my pal n64 and can i believe what i see? the famous VDC chip! ,
maybe a chance? i try the rgb mod and ...it worked  like every N64 RGB mod (with dark colors)

i have read somewhere that last NTSC N64 don't support RGB mod and my pal N64 is an old model.  
in fact EVERY old N64 have a RGB support and every last model don't support it.
Maybe the first guy who has tried the rgb mod on a pal system had a last model and he has thinking that pal model don't support the mod?

Today you can be sure PAL N64 support RGB mod Too,  really it's not a fake!!

So : VDC-NUSBU9801F chip = old N64 support RGB
    DENC-NUSRS5C282 chip = last N64 don't support

Here is some pictures of my N64 PCB:
http://membres.lycos.fr/greatfunky/hpbimg/.../VDC%20chip.jpg (http://membres.lycos.fr/greatfunky/hpbimg/VDC%20chip.jpg)
http://membres.lycos.fr/greatfunky/hpbimg/PalPCB.jpg (http://membres.lycos.fr/greatfunky/hpbimg/PalPCB.jpg)

And here my serials: (look at the model number:NUS-001 certainly the first pal series)

http://membres.lycos.fr/greatfunky/hpbimg/serial.jpg (http://membres.lycos.fr/greatfunky/hpbimg/serial.jpg)

now everybody can forget everything what they knows about the RGB on PAL N64.
And this afternoon I have just made the color booster mod find on this forum and it works perfectly with sharp picture

It could be now interesting to find serial numbers before which model is RGB or not

                                             GREATFUNKY
Title: SNES + N64 PAL RGB
Post by: NFG on October 12, 2003, 01:48:13 PM
That's excellent news, thanks very much for letting us know.
Title: SNES + N64 PAL RGB
Post by: Limbs a Flyin' on October 13, 2003, 01:19:57 AM
hang on a minute, thats a French "NUS-001(FRA)" n64, not a pal "NUS-001(EUR)" n64 - this French machine is a different model than the standard PAL machines (the Australian/NZ nes/snes's have AUS as part of the model number, but have EUR on the N64's so its not just my part of the world)

if France is a Secam country, then do the n64's there realy output pal or infact secam? ive tried the rgb mod, worked on a ntsc system as expected, but not on a pal one..  so i guess if you want to play pal games in rgb people should track down a Secam system?

maybe the secam systems was originaly capable giving out rgb like the ntsc systems, but they decided not to connect it to the AV port for what ever reason..  
Title: SNES + N64 PAL RGB
Post by: Guest_GREATFUNKY on October 13, 2003, 02:15:26 AM
this could be right because in France TV emissions are retransmitted in secam but everybody here says "Pal" because all TV  here can read PAL and SECAM signals so my N64 could send a  pal or secam signal , really i don't know!! but i play with Pal games for sure > i look at one of my cartridges :NUS-006(EUR).
An other very good thing for me now with RGB : Most of Pal games are in 50htz with black border and with my doctor V64 i can play NTSC games in 60HTz in full screen but with the original video output , the colors flicker , not now in RGB !! :)

>.. so i guess if you want to play pal games in rgb people should track down a Secam system?

If other  PAL tv in the world can read secam too like in France ..yes it could be a good idea ;)  
Title: SNES + N64 PAL RGB
Post by: Darklegion on October 14, 2003, 02:15:39 PM
I'd say the france console has rgb support because,I don't think the n64 had secam support....and so it would not work on older tvs that did not support pal but did support scart/rgb.This was even more often true on older consoles such as the sms2(the cut down version of the sms) which had av/rgb support removed in most european/american countries,and only standard rf was used...but in france only rgb was supported,and standard rf was removed.I think the french nes supports rgb too,but I'm probably wrong on this.In any case i'd say its only french and ntsc n64's that support rgb not pal ones unfortunately....Id be very happy to be proven wrong though :D
Title: SNES + N64 PAL RGB
Post by: Limbs a Flyin' on October 15, 2003, 02:15:55 AM
i remember someone mentioned that the french n64 did indeed give a composite video signal out but no idea if its pal or secam etc.. if you go hunting for pictures of french machines (i dont know, go look at ebay.fr or something) it seems they come with the stock AV cable plus an AV->scart plug. the nes there does indeed have a scart plug, but is the rgb anygood? does it still have the funny effect where the nes cant draw vertical lines cleanly (is this just pal machines or an inherant feature" of the nes video chip design?)

i know all about the sms2 as it was the best selling 8bit machine in this little part of the world; i can even still rent SMS games from my local corner dairy (conveniance store) - but they are possibly the last store in the country still doing this.. i guess they havent noticed that nobody has even looked at them for the last 7 or 8 or so years, let alone 2nd hand sellers.. oops kinda trailed off there
Title: SNES + N64 PAL RGB
Post by: GREATFUNKY on October 15, 2003, 09:26:21 PM
After informations taken my French N64 is PAL not Secam,  only TV emissions are transmitted in secam .
Of course all French TV read PAL so why would Nintendo build a different output system in "Secam standard" ?
About the scart plug adaptor : it's only for people who have only a scart plug on their TV! ( scart plug wouldn't say automatically RGB)
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on October 16, 2003, 10:43:35 PM
Quotethis could be right because in France TV emissions are retransmitted in secam but everybody here says "Pal" because all TV  here can read PAL and SECAM signals so my N64 could send a  pal or secam signal , really i don't know!! but i play with Pal games for sure > i look at one of my cartridges :NUS-006(EUR).
An other very good thing for me now with RGB : Most of Pal games are in 50htz with black border and with my doctor V64 i can play NTSC games in 60HTz in full screen but with the original video output , the colors flicker , not now in RGB !! :)

>.. so i guess if you want to play pal games in rgb people should track down a Secam system?

If other  PAL tv in the world can read secam too like in France ..yes it could be a good idea ;)
What's this "Doctor V64" thing and how does it let you play 60hz. and full screen?
And is this only for NTSC games or also PAL games?

And is this definite now? EUR version doesn't have RGB support and FR version has?
Title: SNES + N64 PAL RGB
Post by: GREATFUNKY on October 17, 2003, 03:15:25 AM
Doctor V64 is a copier for the N64 , with that you can play roms directly on your N64 without cartridges.
For more informations about it , ask here : http://forums.cherryroms.com/viewforum.php?f=2 (http://forums.cherryroms.com/viewforum.php?f=2)

I can play with doctor V64 NTSC & PAL games on my N64,  PAL games(not all) are in 50htz black border , NTSC games are in 60 Htz full screen ...

For RGB support really i don't know , but the best way is to open and see the chip inside . Since my discovery , nothing is sure now ... :huh:  
Title: SNES + N64 PAL RGB
Post by: gaz on October 20, 2003, 12:42:31 AM
ok, i tried the rgb mod on my pal n64 today and guess what - it did NOT work. the video chip is the denc-nus one, but it is not a later model console as it has 1996 printed on it...
Title: SNES + N64 PAL RGB
Post by: Supachikn on October 21, 2003, 11:56:03 PM
I recently purchased a Nintendo 64 from a pawn shop here in Australia (PAL :P). It's one of the 'special' 64s with the official transparent orange chassis. The model number is NUS-001(EUR), also on the sticker on the underside is NUS-AUS-1. The copyright year on the main pcb is 2000, and the designation on the video chip (U1 on the pcb) is MAV-NUS RS5C382 9MS 72. It would appear that this is a very late model 64, but I will try to perform the RGB mod and I will report back with my findings. Wish me luck.
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on November 07, 2003, 09:35:29 AM
QuoteI recently purchased a Nintendo 64 from a pawn shop here in Australia (PAL :P). It's one of the 'special' 64s with the official transparent orange chassis. The model number is NUS-001(EUR), also on the sticker on the underside is NUS-AUS-1. The copyright year on the main pcb is 2000, and the designation on the video chip (U1 on the pcb) is MAV-NUS RS5C382 9MS 72. It would appear that this is a very late model 64, but I will try to perform the RGB mod and I will report back with my findings. Wish me luck.
Any luck yet?  :)

What I'm wondering, what is the actual improvement of SNES RGB over composite?
I tried to find differences, but the only difference I can notice is that the colours are more clear (maybe too clear even).
I can't detect a sharper image or anything...
(then again, I don't see vibrant colours with composite as with the N64 and GC...)
Title: SNES + N64 PAL RGB
Post by: Vertigo on November 09, 2003, 01:17:57 AM
Quote
Quote from: Supachikn,Oct 21 2003, 10:56 PMWhat I'm wondering, what is the actual improvement of SNES RGB over composite?
I tried to find differences, but the only difference I can notice is that the colours are more clear (maybe too clear even).
I can't detect a sharper image or anything...
(then again, I don't see vibrant colours with composite as with the N64 and GC...)
Are you serious?
Really?
Try taking a look at the edges of something red against a contrasting background like black. See how it's all wibbly and shimmery? Now look at it again in RGB mode.
You're not likely to ever go back to composite/RF.
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on November 11, 2003, 09:02:27 AM
Red on black background eh?
I'll try that.
I checked with Donkey Kong Country, but as I said, I couldn't notice the wibbly and shimmery screen as with, for example, Zelda on the N64 and GC.
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on April 14, 2004, 09:20:20 PM
I have noticed that SCART 1 produces far better RGB than SCART 2.
I can see the difference in colour between composite and RGB, but without the caps in the RGB cable the colour is too bright!
How can I fix that?
Title: SNES + N64 PAL RGB
Post by: jamess on April 19, 2004, 08:27:01 AM
SCART 2 probably won't support RGB.  Typically, with TVs that have two SCART sockets, SCART 1 will do RGB and composite and SCART 2 will do svideo and composite (RGB and svideo share a pin, so a single SCART socket can't easily support both).  So, if you plug an RGB device into SCART socket 2, you're just seeing a composite picture.

I've removed the capacitors from a GC SCART lead myself, and I agree that the image is overly bright.  I've never managed to find an original SNES RGB SCART lead to have a look at, but I'm guessing there should be some resistors in there on the RGB lines.  Anybody know for sure?
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on April 19, 2004, 08:47:51 PM
I asked Lan-Kwei if they could fix a PAL SNES RGB cable. Michael is looking into it  :)

I got an original SNES RGB cable here which claims to work on a Famicom as well as a US and EU SNES.
Well, I never got it to work on my PAL SNES I can tell you...
The friend I got it from said he never got it to work on his eithers, but he tested it on a US SNES before he bought it back in the days and that worked.
Weird...
Title: SNES + N64 PAL RGB
Post by: jamess on April 22, 2004, 09:09:32 AM
I had a bit more of a play around with this today (modding a GC RGB SCART lead to work on a PAL SNES).  I wasn't able to find much info on the PAL SNES video output on the net, so I've no idea how "correct" this solution is, but removing the three capacitors on the R, G and B lines and sticking in three 33ohm resistors in their place seems to do the job.  Doing that, then switching between the RGB and composite signals shows the images to be pretty much the same in terms of brightness.
Title: SNES + N64 PAL RGB
Post by: Yonder on April 24, 2004, 10:34:19 PM
I've been asking around, and i bought two different snes rgb cables. None of them said anything about countrycodes. Anyway I have a PAL snes and use the 60/50Hz output..(which doesnt seem to matter anyway), and i can't get any output at all.. Right the moment i plug the cable i get picture, but it quickly fades away to a completely black screen. Same for both cables. If i turn the RGB function off ( i can do that on my tv) I get picture. I also bought two cables for my Dreamcast, and none of them gives a picture either, only sound. Doesnt it output RGB?
Title: SNES + N64 PAL RGB
Post by: hellbelly on April 25, 2004, 07:16:08 PM
A lot of places sell Cube cables, saying that they will work on a SNES - unaware of the necessity to remove the capacitors if the cable is being used on a PAL snes.

As for you DC cables, I think there were a batch of them wired up incorrectly, which caused some grief with RGB.  I can't remember what the problem was though, maybe something wrong with the signal going to pin 16, it should be going through a resistor, and sometimes if that resistor is missed out, you get a blank screen (i think, i'm not 100% sure).  The DC has one of the best RGB pictures available.

Pete
Title: SNES + N64 PAL RGB
Post by: Yonder on April 25, 2004, 09:58:45 PM
Capacitors in the snes scart? I've tried to search for info, but I haven't found anything about this.. could u tell me more?

And about the DC scart, I bought two different rgb cables from lik-sang, and none of them would work because of incorrect wiring? hmm
Title: SNES + N64 PAL RGB
Post by: hellbelly on April 26, 2004, 04:22:44 AM
I thought this whole thread started about the necessity to remove those capacitors?

Anyway, open the scart plug up, look at pins 15, 11, 7, notice the capacitors attached to them, they are no good for pal snes's.  The best way to remove then is to use a soldering iron to remove the cap from the scart pin, then remove the wire from the cap and solder it to the pin, repeat for all three pins.  I have heard of people just twisting the legs of the capacitor together though, so it gets bypassed that way, I haven't tried this, no doubt it will work.

Some people say the colours are too bright, so they add a resistor (33ohm was mentioned somewhere).

I haven't tried a dc lead from lik-sang, but it's probably the same as the ones from play-asia which work okay for me.  So I'm a bit stumped.  I would have to open it up anyway if it didn't work  :D

Pete
Title: SNES + N64 PAL RGB
Post by: Yonder on April 26, 2004, 06:21:42 AM
Haha, sorry I must really be blind..
However I just cut those capasitors, and wham! Crisp picture, finally. No need for 33 Ohm caps. Ok, only DC left now.
Title: SNES + N64 PAL RGB
Post by: Dr.Wily on April 29, 2004, 09:40:54 AM
I am french and the european (and french) console are NOT SECAM.

All console in europe are PAL. N64, NES, Megadrive and other are only PAL or RGB output. The compsite signal (not RGB) is only a PAL signal.

For exemple Gamecube have RGB suport with GC RGB cable or SNES RGB cable. But US and Jap GC are not RGB out.

Plug your PAL N64 on a TV capture card and look the signal, it a PAL (PAL B) signal.
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on May 04, 2004, 11:35:09 PM
QuoteHaha, sorry I must really be blind..
However I just cut those capasitors, and wham! Crisp picture, finally. No need for 33 Ohm caps. Ok, only DC left now.
Perhaps you're color blind  :P
What RGB cable did you use?
Did you compare the picture with composite?
A Gamecube RGB cable without caps on a SNES produces an overly bright image, that's just the way it is   lol

On top of that, with Secret of Mana my screen begins to scroll when there are a lot of flashy effects. What can this be?
Title: SNES + N64 PAL RGB
Post by: Hojo_Norem on May 05, 2004, 07:06:44 AM
About the wiring on DC RGB leads,  there are two pins in the connector, one is labeled composite, and the other is composit sync for the vga mode.  When the DC goes into RGB (not vga) it switched off the composite line and outputs onj the comp sync line instead.  Anyway I found the pinout for the DC AV port a while ago and you may find it usefull. (see attached)
Title: SNES + N64 PAL RGB
Post by: Yonder on May 06, 2004, 06:47:22 AM
Ok, thanks guys.
Well my snes rgb cable really outputs correct colors and brightness, I did compare it with my composite. The colors are a just a little sharper with rgb, but I firgured that was naturally since it was rgb. I use a cheap noname snes rgb cable from lik-sang.
Title: SNES + N64 PAL RGB
Post by: Schweino on June 29, 2004, 04:15:07 AM
I found a shop that claims to have PAL snes RGB leads. I have ordered a sample, and I will keep you posted. If it truly are snes RGB leads I will post pictures of the inners and paste the shop's details here so you all can enjoy the crisp snes RGB signals from a pal console too.
Title: SNES + N64 PAL RGB
Post by: Martin on June 29, 2004, 04:34:25 AM
QuoteI found a shop that claims to have PAL snes RGB leads. I have ordered a sample, and I will keep you posted. If it truly are snes RGB leads I will post pictures of the inners and paste the shop's details here so you all can enjoy the crisp snes RGB signals from a pal console too.
There are SNES RGB leads in PAL areas,
My local EB GAMES shop used to have them.
Was this Shop Raven Games?
Video Games Centre?
Because both have true RGB Scart leads for SNES.
Title: SNES + N64 PAL RGB
Post by: Schweino on July 02, 2004, 04:56:30 PM
No. it's a small UK webshop located in the UK. He sells em for 8 quid each. I didn't know other shops are still selling em, I have had a hard time finding one.

Just took a look at the 2 shops you mentioned, man thay have some cool stuf. They are a *bit* overpriced tho...
Title: SNES + N64 PAL RGB
Post by: Martin on July 02, 2004, 05:40:54 PM
Yeah.
Im not too sure if video Game centre still stocks RGB leads.. but Raven definatly does. :D
Have you looked at the prices for their Neo GEo Games? That's insane.
And I am not paying �60 for the DC version of Ikaruga :blink:
Title: SNES + N64 PAL RGB
Post by: Guest on July 09, 2004, 03:33:07 AM
QuoteI found a shop that claims to have PAL snes RGB leads. I have ordered a sample, and I will keep you posted. If it truly are snes RGB leads I will post pictures of the inners and paste the shop's details here so you all can enjoy the crisp snes RGB signals from a pal console too.
Received em today and it are NTSC RGB cables... aaaaargh, why can't shop owners just understand what they are selling?
Title: SNES + N64 PAL RGB
Post by: Schweino on July 09, 2004, 03:34:44 AM
^^^^
Errr, that was me  
Title: SNES + N64 PAL RGB
Post by: Schweino on July 09, 2004, 08:34:49 PM
Is it possible by the way that Rev2 of the snes dos support the NTSC rgb cables? The shop owner told me he has tested the leads with his PAL snes and it works allright. He also sold more of them and didn't get complaints before.
Title: SNES + N64 PAL RGB
Post by: NFG on July 09, 2004, 09:06:03 PM
if by 'rev 2' you mean the SNESjr, which has a very obviously different shell than the first one, then yes - this system does NOT support RGB (or Svideo for that matter).  If you mean a different revision of the PCB inside the original-looking SNES, then no - they're all the same.

If it's a PAL SNES, remove the capacitors in the RGB lines.  That's the usual souorce of trouble (You can simply short them instead of removing them if you prefer).
Title: SNES + N64 PAL RGB
Post by: Schweino on July 10, 2004, 06:24:44 PM
I meant the PCB revision, since there isn't a PAL snes jr. Odd though that the seller claims the cable works perfectly fine on his PAL snes while it does have the capicitors.
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on October 31, 2006, 12:20:13 AM
QuoteI had a bit more of a play around with this today (modding a GC RGB SCART lead to work on a PAL SNES).  I wasn't able to find much info on the PAL SNES video output on the net, so I've no idea how "correct" this solution is, but removing the three capacitors on the R, G and B lines and sticking in three 33ohm resistors in their place seems to do the job.  Doing that, then switching between the RGB and composite signals shows the images to be pretty much the same in terms of brightness.
Can anyone confirm that 33 Ohm resistors is the way to go?
Has anyone else played around and/or tested with it?   :)
Title: SNES + N64 PAL RGB
Post by: viletim! on October 31, 2006, 01:03:32 AM
shaddow,
47 ohms seems to be the definitive value. See this diagram (http://members.optusnet.com.au/eviltim/gamescart/gamescart.htm#snes).
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on October 31, 2006, 07:32:38 AM
Thanks for the link viletim!   :)
Why does the PAL composite video also has pin 18 connected with a 75Ohm resistor?
Title: SNES + N64 PAL RGB
Post by: viletim! on October 31, 2006, 06:22:26 PM
The resistor between the composite video out and ground is required to get the video to the standard signal level. It's present in the standard AV (3x phono) cable too. You can probably leave it out if you've only going to be viewing RGB (and using cvideo for just sync information). I have no idea why nintendo chose design it like this.
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on October 31, 2006, 07:42:24 PM
But it's only available in the PAL SNES, not the NTSC SNES.
Why that difference?

And on a different note, some people have claimed that there were PAL SNES RGB cables but I have never seen them or heard of anyone actually owning one. So I still wonder, have they existed and if yes are they available anywhere?
Title: SNES + N64 PAL RGB
Post by: Hojo_Norem on November 01, 2006, 05:11:18 AM
QuoteThe resistor between the composite video out and ground is required to get the video to the standard signal level. It's present in the standard AV (3x phono) cable too. You can probably leave it out if you've only going to be viewing RGB (and using cvideo for just sync information). I have no idea why nintendo chose design it like this.
I think its because some TVs, especially older ones don't like the composite signal to go out of standard, even when its just being used as SYNC for RGB.  I have seen this happen on two sets, a old Philips based set and a not so old Panasonic.  On the Panasonic the picture would tear a little on bright pictures while on the Philips (well, a Dynatron which was just a re-badged Philips) the picture would go out of sync and roll around until the picture darkened.  Putting the resistor in fixed the problem.  I put it in series with the composite signal and it seems to work with no problem.  
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on November 28, 2006, 10:57:42 PM
Does anyone have a nice guide how to add resistors in a scart cable?
Is it in the same place as the capacitors were?
Since the N64 RGB boost cable mod (which has resistors as well) looks waaay too complicated for me!
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on December 04, 2006, 08:23:09 PM
I bought a solder for this, it's 25 watt, is that ok?
I had the idea 25 watt was too strong but the salesguy it was ok for the purpose of adding resistors in a SCART cable...
Title: SNES + N64 PAL RGB
Post by: NFG on December 04, 2006, 09:48:00 PM
25W is a bit on the low side but should work fine for you.  I use a 35W iron, and have a tiny 10W for delicate work (it sucks for PCBs and takes a long time to heat up larger stuff).  
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on December 04, 2006, 11:31:17 PM
Hmmmz, ok. I once used a 45 watt solder and it fried my SCART in no-time   :blink:
So I thought I really needed something lower than 15 watt.

In regards to releasing pins from the board, with the SNES 50/60Hz switch mod for example, then 25 watt still isn't too much? (I don't want to melt the pin obviously   heh)
Title: SNES + N64 PAL RGB
Post by: Shadow_Zero on December 07, 2006, 06:03:45 PM
So, I used a solder again yesterday since years   :P
I've added 47ohm resistors to the capacitor-less Gamecube RGB cable and that does the trick.
I've made some pictures to see the difference between s-video. I'll mod another cable first without capacitors and resistors and make some pics as well so ppl can see the difference  :)
(though it remains hard to make a good photo of tv image...)
Title: SNES + N64 PAL RGB
Post by: Retro lover on January 04, 2007, 10:32:32 AM
HI,

thank for this forum - it looks great.

I apologise if the answer is in there and i have miseed it - but I wonder if you can help...

I bought a scart lead on ebay which provided instrcutions to mod if for rgb for the pal SNES.


well as I have read here i unsoldered all the 3 capacitors (and reconnected correctly!) but the lead still does not work - no picture at all.

Please can you help ?!

the ebay shop was no good and could give me no info.


has anyone got a wiring diagram for the snes scart so i can check all the wiring?!

the console is fine as it was working sweet with an svideo cable.

thank you in advance
Title: SNES + N64 PAL RGB
Post by: kendrick on January 04, 2007, 10:59:34 AM
RL, please have a look at the note at the bottom of the GamesX wiki pinout page for the standard Nintendo connector:

http://gamesx.com/wiki/doku.php?id=av:nintendomultiav (http://gamesx.com/wiki/doku.php?id=av:nintendomultiav)

Make sure that you have all the connections made specific to a PAL Super Nintendo.

-KKC
Title: SNES + N64 PAL RGB
Post by: reply on January 04, 2007, 11:15:38 AM
thanks for the info but i am struggling with this - the diagram has 12 pin and my scart has 20, and i cant make sense of it all

where at the bottom of that page do you mean?


thanks
Title: SNES + N64 PAL RGB
Post by: kendrick on January 04, 2007, 11:50:24 AM
If you click on the link in my previous post, you will be led to a page in the GamesX Wiki that includes a Nintendo pinout diagram only. Pin numbers refer specifically to the Nintendo connector and not the SCART connector. At the bottom of that page, you will see this text:

"A PAL SNES outputs +12v on pin 3, not composite sync. This is for a SCART TV to automatically detect RGB input."

The page assumes that you will already have the appropriate information about your output pinout. The 12 volt line coming from pin 3 of the SNES connector must be connected to the appropriate pin of the SCART plug to make older PAL televisions detect that the input type is RGB.

-KKC
Title: SNES + N64 PAL RGB
Post by: reply on January 05, 2007, 05:21:09 AM
7, 11 and 13 on the scart are all connnected  - R G and B.


there is no pin 3 connected on the scart end.

i cannot check the other end as it is a moulded plastic plug!

sorry if i am a bit slow on this, all my tvs are modern lcd ones, but i have one crt type portable - should i try if that works?!
Title: SNES + N64 PAL RGB
Post by: kendrick on January 05, 2007, 06:34:03 AM
For reference, please also look at the SCART pinout page on the GamesX Wiki:

http://gamesx.com/wiki/doku.php?id=av:scart_connector (http://gamesx.com/wiki/doku.php?id=av:scart_connector)

You should cut the entire wire some place in the middle and make sure that all the pins you need have wires attached that go to the correct place. It's not necessary to modify either plug end if all the necessary wiring is present.

-KKC
Title: SNES + N64 PAL RGB
Post by: hi on January 10, 2007, 10:47:36 AM
hi,

and thanks for trying to help

I checked the diagrams all seems fine.

i tested on a crt tv and no picture either.

if i cut the cable I dont see how this will help me know what is connected on the end that inputs into the snes?

the person i bought it from on ebay wont refund as i have modified it.

i probably should just buy another lead!

:(  
Title: SNES + N64 PAL RGB
Post by: kendrick on January 10, 2007, 06:51:55 PM
The purpose of cutting the wire in the middle is to check that all the connections you need are present. You'll need the R, G, and B signals, a good ground, composite synch and the 3 volt line that tells the SCART-capable TV to use the RGB signal.

It's possible that the cable omits normal composite video and S-video signals. which is a possible reason why your TV shows no alternate video at all. Without that 3 volt line telling the TV to switch to RGB mode, the TV is expecting to process a composite or S-video input that might not be present. But you won't know unless you trace the wiring or test for continuity on every single last possible signal.

This is where Lawrence would ordinarily step in and make fun of me for repeating myself so much. Please read the SCART pinout page carefully and pay attention to the information about the pin 16 blanking signal.

-KKC
Title: Re: SNES + N64 PAL RGB
Post by: Shadow_Zero on March 26, 2013, 04:00:09 AM
http://nfggames.com/forum2/index.php?topic=37.msg418#msg418 (http://nfggames.com/forum2/index.php?topic=37.msg418#msg418)
Wow, was my topic the start of all the N64 'NUS-001(FRA)' RGB rumours?  ;)

Anwayz, after getting my first LCD TV (Sony KDL-46HX800, previous TV was a Philips PW9551 HD CRT) I started fiddling with all my retro consoles again, especially the N64 and SNES since RGB seems to be a must now   ;)   and I got back to this topic of almost 10 years ago! Guess I'm having my 10th year GamesX anniversary this year, where's the cake Lawrence?!  XD
(though admittedly, I've been more of a lurker than a contributor  ^^ )
Ah yes, reading back this topic, I was so noobish back then, almost cute  ^^

In any case, I'm in need of a new RGB cable for my SNES so I was looking back into this and wanted to verify on the resistors to be used. What I've collected up till now:
james (http://nfggames.com/forum2/index.php?topic=37.msg3328#msg3328) suggested to use 33ohm resistors.

viletime! (http://nfggames.com/forum2/index.php?topic=37.msg15554#msg15554) suggested to use 47 ohm and pointed out to the diagram (http://members.optusnet.com.au/eviltim/gamescart/gamescart.htm#snes). Dunno if that diagram changed, or else why does it make sense to use 47 ohm from the diagram?

Link83 (http://nfggames.com/forum2/index.php?topic=3614.msg24565#msg24565) suggested 75 ohm.

Pete (http://www.mmmonkey.co.uk/pal-snes-rgb-cable-fix/) suggests 47 or 75 ohm.

Apparently I used 47ohm for my Logic3 SCART cable back then and that seemed to have worked out fine. Though I need to do some real playtesting actually!
So if anyone has any more info/experience on this it would be appreciated!

I think I'll start a new topic on all my N64 on LCD experiences (seems to be quite a challenge!)


Oh, and in retro style: RIP Lik-Sang + Lan-Kwei. I had my fun (electronically) shopping there back in the days  ^^
Title: Re: SNES + N64 PAL RGB
Post by: unshe on March 26, 2013, 09:06:58 AM
Hi
in the Official Pal Snes RGB cable there are 4x75ohm resistors. like the viletime's diagram.
But if you got the 1-chip board (there is only one PPU instead of two) i suggest to use the Gamecube pal RGB cable. Also this is well described in the viletime's page.
Title: Re: SNES + N64 PAL RGB
Post by: Shadow_Zero on March 26, 2013, 09:43:10 AM
Which is viletime's page?
All my SNES' get a black picture with the GC RGB cable.
But if the original had 75 ohm resistors, then why do people suggest 47 ohm resistors?
Title: Re: SNES + N64 PAL RGB
Post by: unshe on March 26, 2013, 10:07:52 AM
The viletim's page is the one whit the diagrams for all the rgb connection. This: http://members.optusnet.com.au/eviltim/gamescart/gamescart.htm (http://members.optusnet.com.au/eviltim/gamescart/gamescart.htm) (i was speaking about how the gamcube's cable is wired)
I tried on a lot of Snes and the only one that is working whit the gamecube's cable is the version Snsp-cpu-1chip-01 (a mono-ppu Snes). And looks better whit the GC clable than the Snes one, IMHO. Of course It is working whit Snes cable, but it is a little dark.

About the 47ohm resistors.. This value was what was know before that Link83 disassembled the official cable. I got 4 official pal-snes cable and all are whit the 75 resistor.
Title: Re: SNES + N64 PAL RGB
Post by: Shadow_Zero on March 27, 2013, 04:11:25 AM
Ah, I see Link83 had his own quest concerning this: http://nfggames.com/forum2/index.php?topic=3203.0 (http://nfggames.com/forum2/index.php?topic=3203.0) ;)

So the NTSC RGB cable also works with a PAL 1CHIP SNES?
I thought I read somewhere that someone was saying that the NTSC RGB cable didn't work properly with the NTSC 1CHIP, is that true?
Title: Re: SNES + N64 PAL RGB
Post by: unshe on July 30, 2013, 06:46:35 PM
Sorry, I didnt try NTSC RGB cable on NTSC 1-chip snes, but i think that it will work.
I think the the rgb output circuit of pal and ntsc 1-chip consoles is the same.

Maybe what are you reading about problems beetween em is something depending on the TV, if it is a LCD.
LCD & sync on Videocomposite is a problematic configuration.
Title: Re: SNES + N64 PAL RGB
Post by: Shadow_Zero on July 30, 2013, 08:09:50 PM
Found it again, kamiboy mentioned it:
http://nfggames.com/forum2/index.php?topic=3203.msg28800#msg28800 (http://nfggames.com/forum2/index.php?topic=3203.msg28800#msg28800)
Quote from: kamiboy on November 08, 2010, 11:47:19 PMOut of the two different revisions of the newer SNES's I have the very last, which is apparently very rare in NTSC. Nintendo prolly removed or added some caps from the RGB signal path while doing this last NTSC revision which made the signal incompatible with the SHVC-010 cables.

Mind the differences between SHVC-10 and GC RGB:
Quote from: RGB32E on July 16, 2008, 02:16:06 AM
The PAL GC RGB and SHVC-010 are not quite the same... Since you are using the official GCN SCART cable, you have the choice of using filtered composite or composite sync (both are fed through the scart plug PCB).  Which signal are you using as sync?  Either choice of sync (filtered CVBS or CSYNC) will work fine on a Sony PVM, but not necessarily on other monitors or RGBS accepting devices.

Some similarities between official SFC RGB and official GCN SCART cables:
-R, G, and B are filtered with 220uf caps
-CVBS is fed through the cable

Differences:
-Both CVBS and CSYNC (or +12VDC for PAL systems) are fed through the GCN cable (only CVBS is wired/used on SFC RGB cable)
-CVBS is filtered with a 220uf cap on the GCN cable (CVBS is not filtered on SFC RGB cable)
-GCN cable uses 100 ohm resistor for the SCART mode setting and the SFC connects VDC through series 75 ohm resistor to the +5VDC pin of 21 pin connector.
Dunno if the GC RGB cable would work better with 1CHIP NTSC console...
Title: Re: SNES + N64 PAL RGB
Post by: unshe on July 31, 2013, 12:54:13 AM
it will work better becouse the 1-chip doesn't nedd the 75 ohm resistor between R,G,B, and GND.

ABout resistors/caps on CVBS.. it is used only for Sync, so if the sync signal is still "good for the tv" it will work. So resistors or caps on CVBS are not so important...

Title: Re: SNES + N64 PAL RGB
Post by: Shadow_Zero on July 31, 2013, 03:37:37 AM
The SHVC-10 (official RGB cable for SFC) has 220uF capacitors on R, G and B, just like the PAL GC RGB cable. So no 3x 75 ohm resistors there...
Title: Re: SNES + N64 PAL RGB
Post by: unshe on July 31, 2013, 05:35:13 AM
i was speaking about : better to use a gc cable that a a pal snes cable on 1-chip.
Title: Re: SNES + N64 PAL RGB
Post by: Shadow_Zero on July 06, 2020, 06:24:18 AM
Ah yes, my bad!