another U28 chip issue or...

Ok so my g4 chimes when on button is pressed, blank screen, fan runs - nothing. I was able to get it to start a couple of times and it would run a short time before shutting down. First time it quit after moving it a few inches. second time my g4 quit it showed vertical grey/blue lines, then blank-ish screen. Seemed like it was on but showing a blank screen.

Hoping to not change out the motherboard again (did so earlier this winter) and am game to try soldering the U28. Good candidate?

Answered! View the answer I have this problem too

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Buy the illuminated magnifying glass that iFixit sells, and also a Weller WM120 fine-point soldering iron, and some solder paste -- these three items will make the job MUCH easier.

And yes, I would say this is an ideal candidate, i.e. black screen and "fan on high". It certainly can't hurt it.

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If you have a old board on hand, go for it, you are at no loss if you can't, I can't even do it without several trial and error with my stockpile of bad motherboards I need to fix sometime(I recently started working on a select few Mac computers, I have a nice stockpile of NVIDIA defect MacBook Pro's, 3 right now, I have found out how to get them from schools(all you have to do is ask and see if the tech can), I am picking up 5 more ones that have the same issue

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clay will be eternally grateful.
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