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Hi Yes I have a Whirlpool MIcrowave Oven Model # MH7140XFB-1 And It was working fine this morning I went to use it this afternoon and the panel is not working no lights work nothing the fan under neath doesn't work nor does the light I checked the Plug or outlet coming from the wall and the power is fine there I opened up behind the panel on the Microwave and there is a Brown Wire going to a box and the wire and the box has power going to it but after the box nothing no other wire shows power at all I use a red Pen type device that tells me whether there is voltage in the line or not What happened Please Help So My wife doesnt freak out on me and blame me I have no money right now so I cant afford a microwave ANY HELP PLEASE My regular email is Jkingsley7@cox.net

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Check for a blown ceramic fuse behind the panel. If the fuse is dark in color it is probly bad. you can get one at radio shack store or on line

Posted on Nov 17, 2009

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Posted on Jan 02, 2017

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Where is the fuse for whirlpool microwave MH7140xfb-1 -


The support page for model MH7140XFB1 is here. Your exploded view with parts list is here.
There is a bulletin about door switch (interlock) support holders here.
It may or may not apply.

If a fuse is blown, it can blow for many reasons, and not every problem blows a fuse.

For disassembly info, you can watch the video at this site, or see these text files: http://www.microwavecontrol.com/safety.txt
http://www.microwavecontrol.com/disassembly.txt

Unfortunately, the door handle is not available separately. You would have to order the entire door assembly.

It is part number DE94-01381J and it runs $106.99 from Sears here. (prices subject to change)

William E. Miller
http://www.MicrowaveControl.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

Jan 15, 2017 | Whirlpool Microwave Ovens

1 Answer

Whirlpool model number MH7140XFB no longer heats


you either need a new h.v. capacitor or h.v. diode in the magnetron circuitry if you cant hear it cycle when it runs as in a low pitched hummmm when its drawing current to operate the magnetron tube, each part runs about $30 to $45 each,normally its the h.v. capacitor though

Jul 28, 2010 | Whirlpool MH7140XF Microwave Oven

1 Answer

F7 code on Whirlpool Microwave model GH9185XLT - 1


Power to magnetron
interrupted
12. Replace inverter.
13. Replace all parts and panels before operating.
14. Plug in microwave oven or reconnect power.
15. If problem persists, unplug microwave oven or disconnect power.
16. Replace electronic control.
17. Replace all parts and panels before operating.
18. Plug in microwave oven or reconnect power.
19. If problem persists, unplug microwave oven or disconnect power.
20. Check for reversed plug connection on controls or loose wiring.
21. Replace all parts and panels before operating.
22. Plug in microwave oven or reconnect power.

May 23, 2017 | Whirlpool GH9185XL Microwave Oven

1 Answer

Light bulb not on and microwave not turning on. Was working fine in the am but went to warm something in the afternoon and the light wouldn't come on and didn't warm the coffee.


Hi,
Firstly check fuses in your microwave. You will have to take off the outer casing and check on the power circuit board to see if there are blown fuses.
Best wishes,
Graemevm

Jan 22, 2010 | Whirlpool RMC275PD Microwave Oven

1 Answer

My Model MH7140XFB-1 over the overn Whirlpool


There is an internal fuse. The cause for it blowing will have to be determined.
eric

Aug 06, 2009 | Whirlpool Microwave Ovens

2 Answers

Small 10 sec fire in microwave


it may be ok , but it should be checked for internal damage

Dec 10, 2008 | Whirlpool MH7140XF Microwave Oven

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