LED power supply and logic board tests
My 2210 iMac won't power up, so I have taken it apart, following the ifixit instructions for power supply removal. I don't see anything inside that is obviously broken or burnt out. I am told by a Mac repairman that it is probably either a bad logic board or power supply. How can I test my power supply and/or logic board to see if they are functional? Thanks.
Is this a good question?