crwdns2934241:0crwdne2934241:0 Donna

crwdns2934249:0crwdne2934249:0:

I have had the same problem.  If you google logic board for imac I found one for 23.00, installed myself, now works fine.  My imac would not turn on at all, like you tried everything.

crwdns2915684:0crwdne2915684:0:

open