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Orijinal gönderinin sahibi: prop man ,


Could be the automatic defroster element/circuit has stopped working and ice build up has stopped the fan that sends cool air into your upper section.  When you unplugged it, the ice melted, and once plugged back in, the fridge worked again due to the fan being back in operation,  until the ice built up enough to once again stop the fan from rotating.  This condition will keep occurring until the problem with the defrosting circuitry has been repaired.

Edit:  Probably a good idea to post the model number so that the more experienced participants here have an easier time with helping you resolve your problem.  :-)