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NFG Forums => RGB + Video Discussions => Topic started by: bigsanta on March 14, 2011, 04:58:10 AM

Title: PAL RGB horizontal shift ,any correction circuits to fix this?
Post by: bigsanta on March 14, 2011, 04:58:10 AM
Just as the title says,i (and many other UK )would love to build a circuit to fix the RGBs horizontal left shift problem ,that plagues all my consoles .
Any schematics in english .
Title: Re: PAL RGB horizontal shift ,any correction circuits to fix this?
Post by: albino_vulpix on March 20, 2011, 08:02:34 PM
(http://members.optusnet.com.au/eviltim/shiftysync/shiftysync.png)

Haven't made this myself, but it's on Viletim's site which is enough for me.
Title: Re: PAL RGB horizontal shift ,any correction circuits to fix this?
Post by: bigsanta on March 24, 2011, 05:47:00 AM
What is ic 1,2 and 3 ?
Title: Re: PAL RGB horizontal shift ,any correction circuits to fix this?
Post by: budo-ka on March 24, 2011, 06:20:54 AM
IC1 a,b,c (and d) are a quad 555 timer packaged on one IC, NE558. It's sometime quite difficult to find it.
IC2 is a standard LM1881 (sync separator)

This circuit seems interesting to do the the trick, but I didn't tested it yet. Do not hesitate to try it and share your information.

M
Title: Re: PAL RGB horizontal shift ,any correction circuits to fix this?
Post by: bigsanta on March 27, 2011, 11:43:32 AM
Ah,i see more clearly now.It's the way he had drawn the seperate Vcc and gnd(Vss) for each IC ,this made the schematic look like there were extra un named  ICs .
Title: Re: PAL RGB horizontal shift ,any correction circuits to fix this?
Post by: simonsonsix on April 20, 2011, 02:25:37 AM
@bigsanta, did you go ahead and try this? i'm also very interested in a solution to the hshift problem but sadly my electronic skills are nil.
Title: Re: PAL RGB horizontal shift ,any correction circuits to fix this?
Post by: bigsanta on April 20, 2011, 06:52:32 AM
Quote from: simonsonsix on April 20, 2011, 02:25:37 AM
@bigsanta, did you go ahead and try this? i'm also very interested in a solution to the hshift problem but sadly my electronic skills are nil.

I've got most of my components ,but the rest will be a week or two.But when it's done,i will put up some pictures or a video of what the results look like!