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Re: GE JVM 1443 - Unit makes a deeper noise and will not...
The sound you may be hearing could be the filament transformer breaking down or the magnetron tube failing ..they will arc and eventually fail. If you aren't getting any microwave energy ( to heat material in the cooking compartment) then in all probability it is either the transformer, magnetron or high voltage capacitor.. None of which are something you want to repair yourself... My advice is that if the cost to repair exceeds teh cost to replace then just buy a replacement model. If yours is under 1 year old, then you may be able to negotiate and get a replacement from the store where you purchased it.. If it is older than a year, it's probably cost effective to just buy a new model.
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The problem with the turntable could be the following:
Gummed up lubrication or bad bearings. Check to see if there is any food on the turntable spindle.
If that is ok, check to see if the belt is loose or broken.
If that is ok, check the motor. A meter will confirm whether there is power going to the motor, when you depress the keypad on button. Use the AC Volts setting, if you have about 21 VAC and the motor does not work, then the motor is bad.
Your magnetron tube has failed. According to the warranty on the Profile Series microwave ovens, the magnetron is covered for 5 years from the date of purchase, but labor is not included. I would call GE Customer Service and when they ask for the model number (which begins with JVM) and the serial number, be sure to give the date of purchase as the date you closed on your house. If they insist upon charging you for a service call and labor, I would call my builder's Customer Service Department and demand (very nicely) that they intervene with GE to waive the service and labor charges. That worked for me (Lennar Homes).
Many thanks to e3enigma above! I removed the synch motor under the turntable; all other microwave functions work fine and the grinding noise is gone, hooray! A trip to the appliance parts store tomorrow for a replacement synchronous motor and all should be well. Thanks again!
Magnatron is suspect. Need to put a voltmeter and see if the input
(primary) side to the high-voltage transformer (big heavy iron thing in
there) is getting 120Vac. Don't touch the other (high voltage) side of
this transformer. If the power is there, you are looking at replacing
the magnatron. Its affordable if you do it yourself - buy the part on
EBAY - lookup "universal magnatron"