Is there a way to determine if I have a bad power supply or logic board in my iMac. When I turn it on there is nothing! I have removed the LCD and when I plug it in there is one green light that is on.
Is this a good question?
Rep: 116.3k
66
68
359
You're certain that the mains and cord are good. (First rule of tech troubleshooting - check all the cables starting at the mains).
If you have no trickle light LED #1 then I'd check start by suspecting the PSU.
LED #1
Indicates that the trickle voltage from the power supply has been detected by the main • logic board. This LED will remain ON whenever the iMac is connected to a working AC power source. The LED will remain on even when the computer has been shut down or put to sleep. The LED will turn off only if the AC power source is disconnected or the power supply is faulty.
Testing one of these PSU is very dangerous if you're not experienced. Depending on when and why (lightening strike?) the unit went bad It might be simpler to just replace it.
If this answer is acceptable please remember to return and mark it.
Was this answer helpful?
Past 24 Hours: 0
Past 7 Days: 0
Past 30 Days: 0
All Time: 171
1 Comment
Help us help you. The more complete the description of your problem is (in this case some history of when/how/why the PSU is no longer working) the more assistance we can provide, and, the sooner we can provide it..
by originalmachead