Holding cancel key down to re-set, causes humming noise which stops on it's own, but numbers 1121 continue to scroll on display pad.
Replace touch pad the control board is self diagnosing and is not receiving the signal or continually receiving a stuck key signal
SOURCE: Panasonic NN- A712 combination Microwave 1000w - Switches off after 20 seconds
The 22 seconds is the giveaway.
In most cases, this is 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.
I would recommend that you contact your nearest Panasonic-authorized servicer.
We're happy to help you and we'd appreciate your
thoughtful rating of our answer.
SOURCE: Our Sharp Microwave Model R-508FS
I checked the 200 amp breaker box and found that the screw for the wire going to the breaker for the microwave was already as tight as it could go. So, it appears that there is nothing more to do with this and I don't think I'll have any more problems with this microwave.
SOURCE: Samsung MW1080STA Microwave Oven
This
is due to a defective or loose magnetron causing electrical
interference and disruption in the control circuit board.
If
your magnetron was recently replaced, it may have loose mounting nuts
or bolts or maybe the wire mesh RF gasket was not installed or got
pinched.
It may also need a new high-voltage diode and stirrer, and the cavity may be affected.
If
you or someone you know decide to look into it, we have critical
information on safety, disassembly and door switches at our site, and
our link is at our listing here on FixYa.
If
it's within the magnetron portion of the warranty (usually 5-9 years)
but out of the original full warranty (usually 1 year), then your
manufacturer will cover the part cost, but not the cost to visit you or
the labor charge to do the work.
You can order Samsung parts here.
You can find your nearest Samsung-authorized service center here.
To find out if yours was recalled, please call Samsung's Service Division at 800-932-3837.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
SOURCE: Kitchenaid KCMS185JSS-3 microwave - no power
Well your gonna have to take it down a take apart the microwave more than likely. Probably have a shorted HV diode,magnetron, shorted winding in HV transformer.burnt or frayed HV wire insulation
Whirlpool is conducting a safety recall on the Kitchenaid KHMS155L series (and similar models under other brand names) that display the F2 code or have been observed self-starting. Other symptoms may be additional codes or unintelligible info being displayed, and failure to execute the command entered into the control pad. To obtain free replacement of the control panel, call Ava at Whirlpool: 1-866-640-7146, extension 6337. She will want your complete model and serial numbers and a phone number and address where you can be reached. She will arrange for A & E Factory Service to contact you to set up an appointment to come out and replace the control panel at no cost to you.
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