Question about Microwave Ovens
I'm sorry to say, your unit is shot! Once the control of the microwave signal is deflected like that, it is DANGEROUS to operate. It may not be worth fixing. Replace it!
Posted on Jan 20, 2013
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Posted on Jan 02, 2017
SOURCE: Microwave quit
I would suspect either door switches or an intermittent control circuit board, either of which can be repaired. Opening the door while cooking (without first hitting the STOP pad) is the primary cause of door switch failure over time. I have a text file on my site called "doorsw.txt" which helps in diagnosing and repairing door switch problems. You can find the file via a Google search. It will help you check and replace the door switches if you or an able friend is so inclined. In some cases, the problem is a bad connection or a bad relay on the control board. That's something we see fairly often, and we repair them for only $32.50 nationwide.
Posted on Oct 12, 2006
You should be able to get a replacement keypad, and that's not a hard job for a DIYer.
If you're interested, post your correct brand and model and I'll give you a more specific suggestion.
(Your post subject says Jenn-Air M169B put it's posted under Sharp R-316FS so I'm not sure which you have).
If it's a Jenn-Air, you can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383
You can usually find Sharp exploded views by entering your FULL model number here: http://www3.sears.com (the 3 is correct)
You can order Sharp parts from there or from Tritronics at http://www.wehaveparts.com
We're happy to help and we appreciate your thoughtful rating of our answer.
Posted on Jan 21, 2008
If it stops at 16 seconds and is a sensor model, it probably has a defective humidity sensor.
Ifit stops after 22 seconds, that means the controller has detected aproblem, usually a problem with the inverter or a bad magnetron.
Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.
You can find an authorized Panasonic servicer here.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Nov 21, 2008
Testimonial: "Ok, I may be able to buila a hi-volt inverter, I have a friend who does windings for transformers... I will look into that"
Remove the cover after pulling the power plug. Check the transformer and large capacitor for signs of overheating. If they look ok, then remove the sheet metal wave-guide from the area where the energy enters the cooking cavity. Under the wave guide is a fan-like device called a stirrer that has a plastic bearing. This stirrer bearing is commonly arced over (when the oven is operated with nothing to heat in it). Usually the bearing looks good, but has arced internally. Replace the stirrer as a unit. The machine can be operated with the case off and a cup of water for a load, but keep you hands clear. Look for smoke.
Posted on Sep 07, 2009
Quite often this is due to grease or food particles stuck to the inside of the oven or stuck on or behind the mica waveguide cover.
The waveguide cover is usually about the size of a playing card and often held in place by a plastic rivet.
Sometimes it is the ceiling of the oven.
Your owner's manual may address this. You can download GE owner's manuals and installation instructions here.
It can be fragile, and the metal edges of the oven behind it can be sharp, so be careful!
The cover and the metal behind it should be cleaned with a mild, non-ammonia cleaner.
If the cavity metal of the oven is chipped or charred, it will have to be sanded smooth and clean.
Then you can apply some high-temperature appliance paint, available from places like Wal-Mart or Lowe's.
If your waveguide cover is burned, it will need to be replaced.
You can find helpful exploded view diagrams and order parts by entering your full model number here.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.AC
Posted on Oct 11, 2009
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