Ok, I'm new here but maybe you guys can help.
Problem: G4 will not boot up.
Symptom: 1. Power light comes on when touched but then goes out when let go.
2. Red led on Logic board comes on.
3. Fans and power bus to board are all operational.
4. Heat sink on CPU does start getting warm, as per normal operation.
5. No Video, No attempt to spin the startup disk, no beeps or any other sounds.
I took it to my local guy who said he thought it was the logic board. Another opinion from somewhere else said it wasn't.
I tried the PMU reset and logic board resets but still no change.
First occured after leaving the machine on over night. Screen was frozen and did not respond to any keys. I had to un-plug and replug in. Then the problem occured.
Any Ideas???
Thanks,
Charles