One day the unit was working fine. The next day, no heat. It runs through the cycle and appears to be working, turntable turning, seconds counting down, lights on, making the normal sounds - but the food is still cold at the end of the cycle. I read through all the solutions to see if I could solve it that way. I have tried pressing down on the door while running but this did not help so I doubt it's a door switch. I installed the unit myself when I bought it in 2002, and I have been an amateur radio operator for many years so I feel capable of doing any repairs safely. I'm thinking I may have one of the magnetrons from the bad batch I hear GE got one time, or something else in the high voltage circuit is causing the trouble. Thanks for your help!
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It's most likely a defective magnetron or a bad connection at the magnetron terminal. The GE bulletin on the magnetron kit can be found here to see if yours is one affected: http://www.microwavedisplay.com/ge_mw_mag_kit_bulletin.pdf You may have a loose and tarnished connection at the FA terminal of the magnetron. If so, it needs to be disconnected, tightened, maybe burnished or sanded, and reinstalled. If it still won't work, the mag is bad. But before you do anything, we have *critical* safety and disassembly info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk
Posted on Mar 05, 2007
Magnetron is broken. Replace it with $48 from eBay.
Posted on Sep 27, 2015
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I have the same problem with a 2006 manufactured GE Microwave over head oven model number JMM1630WJ03, Serial number RL9000440 This unit has only been used just a few times in or winter home as we have only used it 5 or 6 times to heat small things up lioke brand new now it won't HEAT everything eles works but NO HEAT What is wrong with the GE products ? ? ? I am reading a TON of complaints about GE these days , AS LONG AS I LIVE I WILL NEVER BUY ANOTHER GE PRODUCT EVER !
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