First, disconnect all peripherals and retest.
Otherwise, see the voltage test points in this previous link
http://macosx.com/forums/hardware-peripherals/298426-how-test-g5-power-supply.html
If you are technical savvy, you can purchase an iBook G3 (w/a failed logic) and swap the LCD panels. Only the iBook G4 1.33 model uses a hi-res LCD, but even then one of these G3 LCDs will work just fine. Just make sure you get the appropriate size (12 or 14" model).The good thing is that you...
First off, both the eMac 1Ghz & 1.25 GHz had the bulged caps issue. You can see 3 of the 13 caps by removing the memory cover. At least one of the 3 will be bulged if the other caps are bulged. Apple was covering logic replacements for 3 yrs past the purchase date.
If no bulged caps, then I...
Troubleshooting ADC issues is plain crazy (too many components / software involved). That's why I keep a known-good ADC Display in the shop to aid in troubleshooting. I've personnally been made foolish twice by intermittent ADC Displays. They caused all kinds of whacky stuff you would swear a...
The "silicone thing's" job is to return the key to an un-pressed state. If you hold up the key manually & power on, is the problem still there?
If so, you can wedge it so you can continue to use your PBG4.
The boots are not replaceable and will require a keyboard replacement.(well unless you...
@moviefan
Make sure the firmware is up-to-date on that G4. As I recall 4.2.8 was the latest for that model. If the firmware is too old firmware, target mode may not work at all. You can get the version by using the System Profiler and looking at the # under Boot ROM. You will need to boot into...
They all look the same on the outside, but are very different inside. The earlier versions have two fancy clip on CPU covers. Later models have one big cover.
A properly seated CPU feels the same during installation as an improperly installed one. It is also VERY easy to damage the CPU during...
Reseat the processors. Many times they feel like they are the whole way back in, but are not. It would not hurt to check the pins for the CPU socket on the logic board. I've seen 'em bent over by improper installation (which is extremely easy to do). Since you stated earlier this is the 2nd Gen...
Technically speaking, a capacitor will degrade over time regardless if it is used or not (shelf life). But that is 10+ years. Before that time you will be using something else for sure. Aged cap failure is not that common, but it occurs.
Very rough handling handling can collapse the optical pickup of the drive. Hopefully he did not ship it back in a box of noodles where the unit settles to the bottom and takes a serious beating.
You could try cleaning the pickup (fish eye), but the mech is probably shot. Try reading a cd and...
For any video display issues, always check the System Preferences Universal Access, Under "Seeing" tab, "Display" section, make sure Enhance Contrast is set to normal.
To test a G5 PS, you must measure for a trickle voltage on Pin1 . There will be+5Vdc (btwn Pin1 & Pin 23 GND) after plugging in the AC Cord. If there is no trickle , the supply is bad.
(Note: Pin 12 and 24 are empty. Pin 13 is GND. These are the other 4 corners. You probably will have to...
Most MacBook hard drive failures I've seen fail without warning. Actually, SATA drives seem to go all at once and no tricks seem to bring 'em back for the one last time like the IDE drives.
If the drive is chattering/clanking, then basically you are done. Maybe DriveSavers can retrieve, maybe...