So, a few days back i saw, again, an internet auction from a guy sealing his old iMac G5 Als 20 inch 2.0ghz PowerPc, with everything, like keyboard and mouse. Even the original box. The thin was, claims the add, not turningh on the screen. So i bought it...for us$50. Just before it arrived home, i started to collecting 1800uf capacitors to get my hands dirty on that logic board (I have done it before with very good endings) But wen it arrived, i opened up, and my surprise was big: All Caps wore just fine. Perfect. Even the entire machine was completly clean, inside and out. So powered up and two beeps came. 3 seconds lather the fans became completly crazy. Yep. Ram. Replaced and the same. Removed Pram Battery and checking, it gives my 1.5 volts (Out of 3.2). Replaced with proper one and powered up... The dam thing started to boot!! To good to be true? Oh yes: Wen it heat the desktop, it pixelated. But it worked. So after a few days i have came to the conclusion that this thing need REBALLING: https://en.wikipedia.org/wiki/Rework_(electronics) The question to you all is (Based on experience) should a reballing be Ok, or is it the Graphic Chip gone bad-Not the soldering balls-the one with the problem? No need for pictures to be taken here: This as being a very often common problem in this old iMacs (Search for iMac G5 Pixelated screen). Thanks for any suggestion. Sorry about my English.