I once had this issue with my G5, you depress the power button, one flash. no startup chime. Blank screen. and then the power LED flashes a few times. eventually the fans get really loud and sounds like a jet engine.
The amount of times the power LED flashes is a indicator for what is wrong with the G5:
1 flash: No RAM is installed or detected
2 flashes: Incompatible RAM types or RAM installed in wrong slots
3 flashes: No RAM banks passed memory testing
4 flashes: No good boot images are detected in the boot ROM (and/or there is a bad system config block)
5 flashes: The processor is not usable
This turned out to be very helpful after hours of taking apart the G5 and checking capacitors.
to anyone who has the same problem I had, I hope this helps them.
The amount of times the power LED flashes is a indicator for what is wrong with the G5:
1 flash: No RAM is installed or detected
2 flashes: Incompatible RAM types or RAM installed in wrong slots
3 flashes: No RAM banks passed memory testing
4 flashes: No good boot images are detected in the boot ROM (and/or there is a bad system config block)
5 flashes: The processor is not usable
This turned out to be very helpful after hours of taking apart the G5 and checking capacitors.
to anyone who has the same problem I had, I hope this helps them.
