Bulb and Fan Not Working

Maybe you kicked to hard an hurt its feelings apologise

There are fuses inside the unit. No internal breaker. A lot of the time that damages the main circuit board too. Blowing the trace that supplies the power to the bulb off of the board. will probably need a new baord, or someone to repair that one.

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 in about a week or so.

At our Web site, you can get details of our service, plus we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Or if you prefer, you can order a new control circuit board for it here for $140.10 plus shipping. (Just enter the model number as MH1140XMQ-1 without the dash).

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.

The lights can can be inoperable or stuck on or no bright, too. Sometimes this will similarly affect the exhaust fan operation or inside light, too.

Feel free to contact me directly (and please remind me of your full model number from the tag on the unit) for more information & help.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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

Q - While trying to change the light bulb on the oven, the bulb broke. When it did, it threw the circuit breaker and the whole oven went out. After resetting the breaker, everything on the oven works except there is no power to either light socket. Any ideas or suggestions on what to replace?
A - You tried to change the light bulbs with the power still on.....tsk tsk!!
Hate to say this....but probably blew out part of the circuit on the smart board ( the brains behind the key panel you touch ) when the short blew. The light relay on the smart board may have been damaged but 9 out of 10 times when I check them, the board itself is damaged.
check out this problem.
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when that happen to me i change the bulb and the fuse in of the microwave f the don't work send it to the company that made it and they should tell what wrong.

1. Check your circuit breaker for this m/w. Reset it.
2. Microwaves usually have 20A fuse inside. It could be broken.

I’m happy to help further over the phone at https://www.6ya.com/expert/vitaliy_f406165329c75ede

I had the same problem. My Magic Chef, MCO153UBF Microwave had similar problems. The Magnatron, Cooling fan, Turn table and under hood lights were not working at all after hearing a pop sound under the control panel. Thought it was the fuse but the fuse was fine after testing and replacing. I checked the circuit breaker wired to my house and saw it had a break to my kitchen outlets so i flipped the switch to get back the kitchen outlets. Then I checked the microwaves Control Panel ( Printed Circuit Board) underneath and saw to traces were burnt. I soldered the two trace lines and the fixed the problem.

The turn table and fan are connected in series with the bulb,as you have mentioned that you have replaced bulb,so please check again for any loose contact on bulb holder or bulb continuity again.

This rarely blows the internal fuse, but the fuse is located either behind the control panel on the floor of the oven or on the door switch holder. You can send us e-mail via our Web site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk Thanks very much.

Techy, that's where I would start. There is an internal fuse. Sometimes there up front where we can get at them and somestimes we have to drop the whole oven and remove the wrapper. Unplug the microwave and remove the upper grill by removing the two screws holding it on. It will pull off forward. The control panel has 1 screw on top, remove it and lift up and tilt out. See if you can see the fuse cradle and fuse. 20 amp, part number 4358704. The diagram I have shows it more toward the back but these diagrams can be wrong. If you don't see the fuse behind the control panel you probably will have to drop the oven and remove the wrapper. Catriver..post back.