crwdns2894164:0crwdne2894164:0

Model A1311 / Mid 2010 / 3.06 & 3.2 GHz Core i3 or 3.6 GHz Core i5 Processor

crwdns2886949:0326crwdne2886949:0 crwdns2858137:0crwdne2858137:0

Intermitten LED #2 on Logic Board

I have a good working power supply. It has been tested as well as the logic board.

When I plug the AC plug into the electric outlet without turning on the system the #1 LED lights which it what it should do.

The fans keep starting and stoping and the #2 LED blinks off and on. Is this normal? When I press the start button it continue to do the same. Could there be an open circuit?

crwdns2893858:0crwdne2893858:0 crwdns2893862:0crwdne2893862:0

crwdns2894050:0crwdne2894050:0

crwdns2889612:0crwdne2889612:0 0
crwdns2892346:0crwdne2892346:0

crwdns2886778:01crwdne2886778:0

Carefully disconnect the power switch connection on the logic board. Does the #2 LED stay off and the fans are not running?

You may want to run the diagnostics. With everything connected reboot the system and hold the D key did any errors pop?

crwdns2894046:0crwdne2894046:0

crwdns2889612:0crwdne2889612:0 0
crwdns2892346:0crwdne2892346:0

crwdns2893896:0crwdne2893896:0

duane c johnson crwdns2893898:0crwdne2893898:0
crwdns2894754:0crwdne2894754:0:

crwdns2894766:024crwdne2894766:0 0

crwdns2894768:07crwdne2894768:0 0

crwdns2894768:030crwdne2894768:0 0

crwdns2894770:0crwdne2894770:0 30