iMac G5 X600 GPU issue

[Roman78]

I received an iMac G5 17" iSight with X600 GPU. This machine has some Graphic issues. Running OSX 10.5 the screen looks fine, but when starting a game the screen has stripes. Also the bootmenu gives some stripes.

Now is this VRAM or the GPU itself or something else like caps? I would like to make a VRAM test. I know the AHT can do this, but i don't own the right version for this model. Does someone have a download link for this model? Or is there some other software running on PPC to test VRAM?

I found the VRAM modules on eBay for 2.99 each, need four of those.

 

[z970]

Apple Service Diagnostic 2.6.3 can easily be found online if you search. That will test the VRAM.

If I remember correctly, TechTool Pro 4 might also test the VRAM. You can find it at Macintosh Garden.

 

[Hrududu]

I had to reflow the GPU on a 20” G5 iSight. While they weren't as notorious for bad caps, they did have GPU issues.

 

[Roman78]

Name me one Compact Apple Product with dedicated GPU which not having problems with it

So you thing it is the GPU losing a BGA connection. This could be, i saw a picture while gaming running at about 90°C - 194°F

 

[mikiotty]

Name me one Compact Apple Product with dedicated GPU which not having problems with it

So you thing it is the GPU losing a BGA connection. This could be, i saw a picture while gaming running at about 90°C - 194°F

Yes it is. Mine had the same issue, it's been going on for 4 years without an issue after the reflow

 

[LightBulbFun]

Name me one Compact Apple Product with dedicated GPU which not having problems with it

So you thing it is the GPU losing a BGA connection. This could be, i saw a picture while gaming running at about 90°C - 194°F

MBP9,1 does not have any known GPU issues AFAIK

 

[Roman78]

So i did a reflow with my BGA-solderstation, now he is not turning on anymore.