iMac not turning on, Service LED#1 blinking
would appreciate any comment/help about the following issue:
I got an iMac 27“, Late 2015, CTO. Display had a transport damage. Removed screen and tried to power on, service LED#1 is only blinking, if I press the power Button for a longer time, sometimes the LED will just stay on, sometimes the LED continues to blink. I can hear some strange noises from the PSU… Did anyone experience a challenge like this, should I try another PSU or could this be related to a faulty logic board? Could a faulty CPU be the reason for such a behavior?
Appreciate any support,
just swapped the PSU against a known good one, same result, please see the video:
I guess it is Logic Board related, could this be a faulty CPU?
Service LED#1 is blinking, Service LED#2 is frequently and very briefly flashing (almost unnoticeable)