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I, too, have the GE -JKP86. Microwave over oven. My oven would not heat up on bake or broil. Elements checked good, no fault codes. This is how I fixed mine: Shut off power at the box. Remove unit from cabinet. I placed mine on a chair. Remove cover(s) until you expose the circuit boards behind the control consol . The top board is behind the microwave controls, the bottom is behind the oven controls. Remove the bottom board by removing 4 screws. I take pictures with my smart phone, even some video. Helps me remember how everything goes back together. BE SURE THE POWER IS OFF, HIGH VOLTAGE IN HERE! One of the screws is hard to see. It is behind the ribbon connector. Unplug everything carefully. You will see a red and an orange wire north and south of a small relay. You must unclip the circuit boards from each other. Look for a missing drop of solder on the back side of the board with the relay. You will find it underneath where the red wire connects. Mine ( looking through a magnifying glass) looked like a crater with a wire sticking up out of it. It had overheated and the solder dripped out. The joint is inadequate. I cleaned and resoldered it with a nice blob. Reassemble and check. I just left mine on the chair. Power on. Select bake, 300, start. You should here the relays click and after about 45 seconds you'll see the bottom element glow. After one minute the relay clicks again ant you'll see the top element glow. They alternate during the preheat cycle. Put it all back together and shove it all back in the hole. Hope this helped!
Hello, Typically when that happens a part called the diode is bad. IT IS EXTREMLY ADVISED BECAUSE OF THE HIGH VOLTAGE AND REAL POTENTIAL FOR RADITATION THAT ONLY A PROPERLY TRAINED APPLIANCE TECHNICIAN REPAIR THAT
CKD WIRING FROM PANEL OK
CKD TERMINALS AT ELEMENT HAVE 120V ON EACH ELMT
FAN COMES ON
THE ON INDICATOR SHOWS WHEN TMP &START PUSHED
MICROWAVE WORKS FINE
I ORDERED A NEW BAKE ELEMENT TO TRY-NOT HERE YET
I just found out my baking oven doesn't work and I hear the fan for the convection roast, but no heat. I had the appliance man out and he said that I need a relay board! Big bucks and they don't make this model anymore. Moreover, the microwave and warming drawer work fine. This is ridiculous!