Most old G4s PowerPCs have Problems with the Elkos of their Powersupply.
If you're a bit into Soldering, you can quite easily exchange these and get it working again.
Sadly, it didn't work out for me, maybe something different wrong...
BUT - for the sake of helping you out, I made a Picture with the Specs of the Elkos that normally "fail".
Red are the ones which actually were really dead as I measured the old ones (i.e. the 25V 100microF had only 68microF left),
Green were the ones that "still worked" / were in quite good condition.
But thats only from one Powersupply, on yours it might look different.
But anyway, good luck!
Hi, i have the same source, one resistor is burned totally, i can't read the color code. The resistor is next to C44 ceramic capacitor, Do you know these value of the resistor?
Please, help me, please. Thank you very much
Hello Edward,
I am sorry I can't help you other than the pictures I posted. Could you point me a more exact location of the C44? Maybe I got some old pictures laying around at my Work PC - but I am not sure.
Anyway - if an resistor is burned, I think there could be some more serious damage - because that really should not happen.
I think it might be better to buy an new powersupply / used one from ebay as this one might not be secure to be used anymore.
Elkos do pop, thats a normal wear out. But badly burned resistors should be a sign of serious problems with i.e. the electronics, coils or other shortcircuits...
thanks for answer, the C44 is below the transformator, which into your pic is in left, and next to the other capacitor C43 that you mark with a rectangle green with the legend 50v 47uf.
Resistance is green but I can not read the color code.
Also I think the problem may be more, but I have not found a stores that sells, or have in stock this source, so i'm trying to fix, to see if I have luck.
Do not know if I can send the picture you posted, pointed resistor I need, or send a email with the image.
Anyway, thank you very much for you time, and I hope some comment, Regards
Hello Edward,
I am sorry, I did look up my old backups, but sadly I do not have other than those pictures at hand and no possibilty to help you out :(.
Sorry.
In any case I think you should really try to replace that power supply by an new one, as I don't think that the resistor was the source of the problem.
I have seen these supplies on ebay sometimes.
Maybe you can even buy an complete G4 and harvest the power supply from that, could be even cheaper.
Regards,
Nico