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After googling this problem and realizing a built in microwave/oven would be at least 1500 dollars to repair, I decided to try to replace the wave guide cover. This is where the sparks seemed to be coming from. Taking the old one out was easy, it just popped out using a knife. Within seconds of putting the new one in, I was able to verify this was the problem with the sparking. So an easy fix with a $6 part! Read more
GE JKP90DP1BB over oven microwave would not power up after overcooking by a tenant. Removed control panel with 2 screws to access and check the main power ceramic fuse, thermal fuse, and top primary Interlock Switch, middle Monitor switch, bottom Secondary interlock relay. All done with difficulty without removing the microwave. No problem found. Removed microwave from above oven mounting and found addition thermal fuse cook senor on left near vented interior cavity open (fuse cooked), with... Read more
Used youtube videos to show me what components to test for diagnosis and my appliances electrical schematic located by removing the control surface beside the microwave (two screws to the right when you open the microwave door). Make sure breakers are off. I tested components for continuity and resistance. I ultimately did not get a voltage reading between the Bake and L2 nor the Broil and L2 located on the oven control. A visual inspection also showed a scorching on the L2 location and the... Read more
I have one of those combo units with the microwave on top and the oven on the bottom. The thermometer switch located on the upper right side mounted on top of the magnetron read open on a continuity test. Replaced the thermal fuse. Everything works fine now. Note: The thermal switch on the left side read closed, the fan switch on the lower right side read open. I just watched some youtube videos on what and how to test the components. The 20A fuse was good. So I tested the thermal... Read more
Replaced the latch device which contains the motor and two limit switches Read more
Ordered the oven control and put it on. Read more