I am a single female and didn't have the money to replace my microwave. My oven was completely dead. The power source was fine. I went on the appliance pro website and chatted with one of the pros. He was able to tell me what the problem might be and sent me the scamatics of the oven. I opened it up and relaxed the fuse and the microwave works perfectly t. Thanks to the pros at AppliancePartsPros!