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This microwave thermostat monitors the internal temperature and automatically shuts off the microwave when it reaches 105 degrees Celsius to prevent overheating. It protects your microwave from damage caused by excessive heat buildup. Replace this part if your microwave shuts off unexpectedly during normal operation or if it overheats frequently.
At first I thought it was the supply fuse. Multimeter proofed otherwise. Manufacture schematic outlined the most probable cause the cabinet flame sensor. I bypassed the thermostat fuse sure enough that was the problem. Read more
The door latch is opened by the lever switch, which sits on a plastic peg on the body latch - part AP3186330. This plastic peg had broken. Talking to the dealer, it sounds like a common problem. It's fairly simple to open the cabinet and remove the old part. The manual claims that the big capacitor has a self-discharging circuit, but it's best to briefly short it out with a resistor just to be sure. The biggest issue is the three electrical interlock switches that also click into place... Read more
Microwave not heating food? The high voltage capacitor often fails alongside the diode or magnetron. DIY repair in 1-2 hours can save hundreds.
Mostly when it comes to microwaves not heating up food, your problem is the high voltage diode, capacitor, or the magnetron. I started with the diode (cheapest of the three parts). I couldn't accurately test the diode as my handheld meter didn't have enough power for the diode checker. Replaced the diode, no change. Ordered the capacitor, installed, and now she's heating up like the day I bought her. Cost of parts: $110. Cost of similar microwave oven (new): $300. Going to get another... Read more
If your microwave won't start, buttons don't respond, or display is blank, the control board may need replacement. Moderate difficulty repair.
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