PowerMac G5 dual 2.00 GHZ not booting up, 3 blinking lights, fans running high

colin348

macrumors member
Original poster
Aug 5, 2018
34
7
sucks cause I literally got it 2 days ago in working condition

Edit: I read it may be a problem with the logic board or the RAM. Not really sure though
 

pl1984

Suspended
Oct 31, 2017
2,230
2,642
Unfortunately your research is correct, it's a problem with the logic board. To confirm you can try pressing down on the board in the center of the box I've highlighted and it'll probably boot. You can replace the motherboard or attempt one of the "reflow" repairs (heating the area with a heat gun or pulling the motherboard and putting it into an oven) but those are, at best, temporary.

s-l1000-highlight.jpg
 

Project Alice

macrumors 65816
Jul 13, 2008
1,053
714
Post Falls, ID
Before you jump to extremes

may I recommend re-seating the existing RAM or trying some other RAM before you pull out the motherboard and try and reflow the chipset?

because 3 beeps is No RAM passes POST

and yes while it is a symptom of a failing memory controller on a G5, you could also just have bad RAM
I second this G5s are also very picky about RAM.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.