December 8th, 2010, 03:22 PM
Microwave keeps blowing the circuit breaker
My Kenmore OTR microwave came with the house when we built it. During the 1st year it quit heating and the magnetron had to be replaced (free under warranty). The other night I went to heat something up and as soon as I hit start it blew the circuit breaker. I reset the circuit breaker, the fan, light, and clock all work fine. It only blows the circuit breaker once you hit the start button. We have had this unit now about 3 years. My wife and I were at Home Depot the other day just pricing new units to replace it, and one of the salesman said that it was the magentron over charging. Does this make sense? Any ideas what it may be, and if it is worth fixing?
December 8th, 2010, 08:32 PM
and one of the salesman said that it was the magentron over charging. Does this make sense?
A copy that may help...
It only blows the circuit breaker once you hit the start button
Q - My microwave blows the fuse inside itself as soon as I push the start button.
A - Usually a shorted high voltage capacitor...see components section.
A copy and tip from Prashanth:
Description of problem (Maytag CMV1100Q) :
Microwave stopped working while cooking. Replaced a 20AMP fuse.
When the cook cycle starts, microwave makes a groaning noise and stops. It loses power since the fuse is blown.
Solution: High-voltage capacitor shorted. Replaced it and microwave works fine.
Its located behind the fan underneath the high-voltage transformer.
Remove the vent fan hood
Remove the display control panel by removing the screw
Take pictures of all the connections behind the control panel.
Unhook all connections
Remove the connections to fan
Remove the fan
Remove the screws and connections for interlocking switches.
Make sure the high voltage capacitor is discharged!
Remove the high voltage capacitor and replace
Retrace the steps and put everything back.
Microwave works great now.
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