our 16634 kenmore had blinking lights and random functions... turned the breaker off, then used a star-head screwdriver to open the backside of the door and accessed the pcboard. I then used my wife's toothbrush to clean the cockroach poop from the board's electronics (roaches love the warmth of electronics). There was no poop on the solder/back-side of the board, only the componant side. Good luck, and have fun!
electronic mike, September 2007