crwdns2933423:0crwdne2933423:0
crwdns2918538:0crwdne2918538:0

crwdns2934241:0crwdne2934241:0 mayer

crwdns2934249:0crwdne2934249:0:

If just #1 lights up, this indicates a faulty power supply.  I have no idea why you replaced the logic board.  This model had a lot of issues with bad capacitors so I would inspect them for corrosion and or swelling.

crwdns2915684:0crwdne2915684:0:

open