I recently received a non working X68k Expert HD system. After a failed attempt at rebuilding the stock power supply, I found a small ATX replacement and shoehorned it in. For others looking to perform a replacement of their power supply, the unit I used fits great!
Its an Apevia ITX-AP250W
At the time of this posting, they are available from this seller: http://www.ebay.com/itm/110788590530 (http://www.ebay.com/itm/110788590530)
And here's some pics of it before and after installation. Note I plugged the original PSU fan into the connector inside the new PSU and removed the new PSU's tiny fan.
(http://i905.photobucket.com/albums/ac253/bmcdanold/x68k/PSU3.jpg)
(http://i905.photobucket.com/albums/ac253/bmcdanold/x68k/PSU1.jpg)
(http://i905.photobucket.com/albums/ac253/bmcdanold/x68k/PSU2.jpg)
And if anyone wants to attempt to recap their PSU before it blows and destroys diodes etc, here's a cap chart I made for it:
(http://i905.photobucket.com/albums/ac253/bmcdanold/x68k/x68kPSU.jpg)
A simple cap swap is NOT enough--the reason the things die in the first place is due to incorrectly specced components by Sharp.
There is a Japanese guide (http://x68k.net/x68dengen/) to repairing the Tetris block power supplies with the correct components, but I keep putting off translating the parts list.
And maybe this can give some hints as well.
http://nfggames.com/X68000/Misc/X68000_PSU_Schematics.pdf (http://nfggames.com/X68000/Misc/X68000_PSU_Schematics.pdf)
Eidis
That's what I was hearing was that the deficiencies in the original power supply are more than just old capacitors. I had the capacitors on hand so it was worth a shot.
Question, the compact XVI I got from robivy, how does it's power supply compare to the one in the expert? Similar issues?