Posted: 6 years ago Quote #45
I suspect power supply board EAY41391501 rev B for the following indications:

On powerup, red light illuminates.  Pressing "ON" blinks blue and relay on p/s energizes.  After about 1 second, relay drops out and blue turns steady.  After another 4-5 seconds, light turns back to red.  Same symptoms with either X or Y boards unplugged.  No swelled or leaking caps noted anywhere.  Any suggestions and/or voltage measuring points I should check?