Hello,
I am having an issue here. I hoped it would go away after a re-cap, but it is still there:
(http://up.picr.de/31384588pz.jpg)
(http://up.picr.de/31384589gh.jpg)
In the first picture the darker parts of "CD Rom System" are affected.
In the second picture it is the letters in the lower part of the screen - they are hardly noticable, but actually should be greyish on a working PCE.
EDIT: I have tested alongside with my Core Grafx - this error only shows up on the white PCE.
Sound and animation are not affected (no artifacts noticeable), only this colouration issue.
Where should I look for? What is causing this?
I had a similar issue but much worse. I'd be looking at the two 20256 ram chips or the HuC6270 chip. Look for broken traces related to those 3 chips
I'm sure guys on here will have some better advice for you, but that's where I would start.
I have checked all data lines from 6760 to both RAMs - there is connection on all data lines.
What else could it be?
I have had a few original PC Engines with graphical issues, I fixed them by replacing the HSRM20256LM chips. Try searching SRM20256 for the part.
Console Repair/Mod Center => Topic started by: wolfman on 12/30/2017, 04:45 PM