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We have the same problem of this JVM1650WH02 GE Spacesaver Microwave shutting down after a few seconds, mostly in the popcorn sensor cooking mode, with the display changing to jiberish then asking for a clock / control panel reset. I have seen and have been told of a solution of replacing the humidity sensor (F4 Code on display). I have also seen on the internet from various sources: solutions ranging from replacing the magnetron unit to placing something internally between the circuit board and the computer panel so as to eliminate microwaves which leak internally and effect the control panel, thereby shutting it down into a problem or short default (jiberish display). The "something" placed between the circuit board and the computer control panel (which is behind the keypad) is simply a piece of aluminum foil sealed inside a large ziploc bag which is taped in place to cover the circuit board, between it and the computer control panel in front of the circuit board. Makes sense - the foil stops the errant microwaves, the plastic bag avoids contact of the foil with the electronics. This is a frustrating problem as this GE unit is only 3 years old and we have been told it could cost $200 to $300 to service the problem. It has been suggested to us (by a service facility which also sells units like this) to change / replace the entire microwave. This is NOT a throwaway or disposable item. It should be good for 10 years or more, for what we paid for it. In this economy we all look for inexpensive but good fixes. There have been several suggested fixes in this forum and other forums - which one has worked?? GE's solution is a new humidity sensor due to an occazsional F4 Code. Anyone do that yet? Anyone do any of the other suggestions yet? WJM

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Instead of using foil "trick" - get an anti-static bag (hard drives memory and other sensitive computer software is bagged in to ship) and tape it on the back side of the controller.

This bag will absorb any extra RF that is disrupting the controller.
The foil method works 75% of the time - as it mus be placed in the exact location - is an electricity CONDUCTOR - and also doesnt allow the RF to discharge.... it simply deflects it.

Another test is to remove the front panel, and controller, but don't disconnect it. Try the microwave. At this time - also look for sparking near the upper left of the unit by the magnetron. Any sparking indicates failure - or arcing to something that isnt supposed to be there (chip off the magnetron).

Do the anti-static bag first - as it's the cheapest :D

Thanks for using FixYa!!

Posted on Jun 02, 2009


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