My 10+ year-old washing machine stopped working. We washed a load, everything was fine, unloaded. Put new load in, pushed Power (or any other button): nothing. The only thing that happened between unloading and loading was my wife tried to clean the top of the bin a bit so she spun it by hand and rocked it back and forth trying to get between the top and the cover, but this sort of moving was probably not any more than what happens during a wash. Tried unplugging -- didn't help. What can be wrong?