Display is going plaid

SMDP · #1 March 13th, 2008, 07:29 PM

Has anyone seen a display go plaid before? Anyone know what might cause it? We are able to take a screen shot of it so I don't believe that it can be a hardware problem. A screen shot of the problem is attached to this post, please take a look. Any feedback would be really helpful.

It's a 20" imac, 1.8GHz PowerPC G5, running 10.4.11.

SMDP · #2 March 13th, 2008, 07:33 PM

I forgot to mention that this problem will go away and reappear. It is not a permanent condition.

DeltaMac · #3 March 13th, 2008, 08:21 PM

Seems typical of this program...
http://www.apple.com/support/imac/re...ensionprogram/

Perhaps yours will qualify for a free replacement of your logic board.

SMDP · #4 March 18th, 2008, 12:47 PM

Thanks. The computer does fall in that serial range so we are going to take it in. Hopefully this does fix it.

**Giaguara** · #5 March 18th, 2008, 01:46 PM

Another thing you might want to check would be RAM. Also RAM gone bad can cause that - but that looks more like vram. Nevertheless, if you have the discs that shipped with that Mac, run Apple Hardware Test from them, in looped mode (ctrl-L after language selection, the same shortcut to quit it) and let it run for a few hours at least in extended. It should report something either about RAM, video card or something else.