I have dust Purchase a new condensor cooling fan fitted purfect wires all the same as old one the old one worked but had a problem of stoping neaded a bit of purswading with wooding spoon
so power was coming from the circet board.was very happy till i switched on the Fridg/freezer and the new fan did not work.
The problem you have is often related to capacitors on the appliance PCB that have come to the end of their life. When these capacitors fail they can no longer supply sufficient power to relays that switch and route power to fans and compressors etc. and these parts will then not work.