Question about GE JE1660 Microwave Oven

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GE Profile JE1660GB01 magnetron failure?


I have a 2001 GE microwave oven model JE1660BG001 which stopped working (loud hum with no heat) in 2004. Even though the magnetron appeared to pass the basic resistance test (less than one ohm across filament terminals and infinity terminal to ground) GE replaced it under warranty and that fixed the problem.

Now I'm having the same problem (loud hum with no heat) but this time the microwave wasn't turned off in time and the H.V. transformer fried. I replaced the transformer but still have the same loud hum which leads me to believe the magnetron is bad again. When I tested the magnetron using the resistance test I mentioned earlier it appears to pass like the first one that GE replaced.

Anyway, here's my question...
Is there a better way to test a magnetron to determine if it's bad and is there a replacement magnetron that's engineered better than the original? I understand there is a high failure rate on the Samsung OM75P(31) magnetrons?

Thank you in advance,
Always Broke.

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Re: GE Profile JE1660GB01 magnetron failure?

It pass the resistance tests and still be bad, and I suspect it is.

I would also suggest that you check the high voltage diode to be sure it's not shorted.

If the filament voltage and high voltage are both present at the magnetron terminals, and not loaded down, but there is no heat, then it's the magnetron.

As a pro with over 20 years of expereince, I have always measured the high votlage, but I will never recommend it to a non-professional. Without the right equipment and procedure, you and your equipment can be "fried". No kidding.

Here are some good links to safety & troubleshooting:

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Dec 31, 2007

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