GE washer suddenly appears dead

[SIZE=4]This GE potscrubbeer dishwasher is old but reliable up to now. Two days ago, after working normallly, we filled it as usual but it would not turn on. No sign of power. Circuit breaker not tripped. It is built-in so can’t easily check the power source. The door lock appears to be working normally. From other threads on this site, it seems likely it is something inside the door - a fuse, wiring etc. I really want to avoid buying a new one and am game to try fiixing it myself with guidance.
thanks a bunch
richard
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