crwdns2934241:0crwdne2934241:0 Michael Youngs

crwdns2934249:0crwdne2934249:0:

You are right on the money. Change the power supply and everything should be chooching again.

I had the same issue on a 2013 21.5 thin panel iMac. Changed the PSU and it's as good as.. well a working iMac.

crwdns2915684:0crwdne2915684:0:

open