My GE Profile lately is running for hours, not heating up, no trouble with the drum turning. We have tried flipping the breaker and it is not helping. Sometimes it makes a weird noise like a whine that doesn't last very long. I would suspect a fuse needs replaced somewhere, read in the online manual it has two fuses but I'd like some guidances as to finding them and what kind of fuses to try. Sure would like to avoid a repairman charge if possible. Thanks so much for any suggestions!