Control panel lights on left and right, but not the center for autoclean, start/cancel and delay buttons. Lights on left and right come on and go out after 30 seconds. Sealed circuits at the back of buttons appear corrided on 4 lines coming out of backside. I thought it was the door latch, but new one did not help. I think it's the control panel, but hesitate to spend $125 for that, if it turns out to be the motherboard at the other end of the circuit which does disconnect. I don't think this can be cleaned, in that it is sealed at the corroded side closest to buttons.

Help! It it time to junk the Quiet Series 300 and start over?