Question about Whirlpool MH7140XF Microwave Oven

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Wires to the bulb shorted out now the whole microwave does not work. Breaker at the electrical box was switched back on but microwave did not come back on. Is there a reset or is there a piece I need to replace

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Depending on how much you paid for it...... you might want to replace it. Microwaves are very reasonable priced.... You might have shorted the wires and unless you are a "fix-it" person....., Shop around..... replace it. It probably isn't safe!!

Posted on Aug 29, 2010

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2 Answers

Magic Chef MCBR415S when I plug it up the breaker flips in the breaker box. What is wrong


is voltage select switch on back near power cord entry set for proper voltage ? 120 for usa and 240 for Europe and Canada also check light bulbs inside they could have gotten broken to cause a shortage

Aug 09, 2016 | Magic Chef Microwave Ovens

1 Answer

Microwave pops breaker on start


You probably have either a shorted high-voltage capacitor, or a shorted high-voltage transformer. And there is a 3rd possibility that should be checked first - the so-called "monitor switch" may be stuck in the closed position. There are usually 3 door switches in most microwave ovens, although some have 4. The monitor switch is usually the the one located in the middle of the door latch area.

Feb 15, 2015 | Kenmore Elite Microwave, Model...

1 Answer

Blowing breaker


In general house hold circuit breaker of the house is 15 Amps or 20 Amps.

Either you have defected (weak) circuit breaker and wiring or bad Microwave oven.

The 99.99 % house hold Microwave ovens pull less than 15 Amps. They may have internal ceramic 15A fuse or 15 Amp internal circuit breaker.

To isolate your problem:

1. Plug your Microwave oven to different areas (different electrical circuit) if the different circuit breaker still trips... your Microwave oven has a short - Most of them has a small ceramic fuse 15 amps fuse.-also check some inter lock switches at door .

2. If the Microwave oven works Ok then you may have:

2a. You may overload the existing electrical circuit, try to unplug some other appliances

2b. You may have bad electrical outlet receptacle (Replace it with the same type , - may need helps from licensed electrician)

2c. Weak or defect house hold circuit breaker. (Replace it with the same type , brand - may need helps from licensed electrician)


Jan 24, 2014 | Goldstar Microwave Ovens

1 Answer

My whirlpool microwave model gh4184xsb needed a new cooktop light bulb so I removed the cover to replace it. I didn't unplug it (BAD!) and there were sparks and the microwave lost power. We repla


there are short. go to www.repairclinic.com for to get the parts.
2) test the switch door for short and replace see the diagram
3) test the high voltage capacitor+ high voltage diode
see the diagram

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Jul 15, 2012 | Microwave Ovens

1 Answer

Lights and fan not working on my microwave


was the fan working before you replaced the bulbs? Did you check the old bulbs ie filaments broken....if two bulbs stopped working at the same time probability suggests that the problem was not the bulbs, especially since the breaker fired when you put in new bulbs.
Could be a short inside ...if you are not brave enough to take it apart and inspect better you take to be looked at ...better a fried microwave than a fried you...

May 29, 2012 | Microwave Ovens

1 Answer

When I was unscrewing a burnt out hood lamp on


I would not use the lamps. Sounds like there is a shortage in the wiring for the lamps. They lamps should run together, and if one of the sockets have a short or burned wire it will not let it complete the circuit. This could be a fire hazard, so I would replace the whole microwave. It would be more trouble to tear it apart and find the exact problem than it's worth.

Jan 04, 2010 | Maytag MMV4205 Microwave Oven

1 Answer

Short circuited Whirlpool MH1150XM while changing the bulb underneath. Need help to fix it, thanks :)


We replaced the board behind the control panel. $130.00. If you do this make sure you can put the wires back the right way. My husband finally got it and our micro is working like brand newThanks to all who tried to help.

Sep 29, 2008 | Whirlpool MH1150XM Convection/Microwave...

2 Answers

Our Sharp Microwave Model R-508FS has just recently started doing some odd things. If you key in a time and press start, it may continue to microwave but the timer will not count down. Or, if you...


I believe I've solved the problem. I had tried the hard reset but then last night I thought about it and decided that since this house was built 22 years ago, I wondered if the electrician had used the short cut method on installing the sockets for electrical power. So, I measured the voltage at the adjoining socket while heating water. The voltage before turning on the microwave was 122.7 volts. After the microwave was turned on, it dropped down to 107.6 volts. I located the circuit breaker and shut it off and then pulled out the dual socket. Sure enough, they had used the time saving technique of stripping the wire back about 5/8 inch and then pressed it into the back of the socket. I figured it would be better with the microwave pulling 12 amps to just take the wire and wrap it around the screws on the side of the plug, tighten them down and then put it back in the box. Turned the circuit breaker back on and reset the clock on the microwave and did some more tests. No problems so far and when I measured the voltage drop, it went from 122.7 down to 119.7 running at full power. Don't remember the wire size but it was adequate. The only other thing I may try to eliminate any voltage drop would be to go to the master breaker box and tighten down the screw on the breaker going to that microwave outlet. I had tightened them all down in the whole 200 amp box a long time ago, but it probably wouldn't hurt to go thru the whole box again.

Aug 20, 2008 | Sharp Microwave Ovens

1 Answer

Did I short something out?


We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

This can often also affect the exhaust fan operation, too. The lights and fan can be inoperable or stuck on too.

Details of our service and critical safety information and disassembly information is at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

We're happy to help and we appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

Apr 14, 2008 | Roper MHE13XH Microwave Oven

1 Answer

Microwave range top lights


This looks like a new entry as opposed to a reply, so I don;t know what advice you got or from whom.

But based on your problem, I'd say I know your problem.

We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

This can often also affect the exhaust fan operation, too. The lights and fan can be inoperable or stuck on too.

Details of our service and critical safety information and disassembly information is at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

We're happy to help and we appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

Apr 13, 2008 | GE JVM1650 1000 Watts Microwave Oven

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