iMac g5, no video output
I just replaced the logic board and power supply on my G5 imac, both of which were bad. Now, when I power on, all three LEDs on the logic board come on, t there's no video output. The video had been working fine before the logic board and power supply failed.
THe tech note says to try resetting the PRAM. We have a wireless (usb) keyboard, and holding down option-apple-p-r doesn't seem to do anything. Is there another way to reset the pram?
Any other suggestions would be welcomed. Replacing
iMac, Mac OS X (10.5.8)