20 Most Recent Whirlpool MH1141XM Microwave Oven Questions & Answers

Did you check the fuse ? this may need replacing also

It could be either a separate door switch for the light that's gotten crufty (sometimes just cleaning them makes them serviceable) of the microwave that needs to be reset. Just check for tripped circuit breakers, since you've already unplugged the thing to swap the bulb (I expect.) Then check your bulb's continuity, then check the socket and switch functions if things aren't sorted.

Possibly 2004 ish

It's probably a bad door switch. See this file for tips and to order a switch.

You didn't mention your brand and model numbers, but you can find links to helpful exploded view diagrams and part ordering help for most brands here.
I recommend that you bookmark that link to your favorites.

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BULB-LIGHT

Part Number: AP3918716
Made by WHIRLPOOL

The silver tab is the neutral which is Blue.
The copper tab is hot and is connected to the White wire.

European convention dictates that Blue is always Neutral.

Have a nice day

When the oven stops heating it is usually the magnetron has gone bad. The cost to replace the part is about $75 which is almost as much as a new oven.

It is very possible it may have burnt wire or burnt capacitor. Remove unit, remove top cover and look inside to see if you see any burn marks or burnt wires. Also check fuse to see if it is good or not.

Test the high voltage capacitor, the rectifier diode.or the magnetron.

The diode and capacitors can br tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, even if power is off. Capacitors can get discharged by shorting their two contacts.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.

All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, contact the seller here to purchase parts.

We see (and repair) this a lot. The problem is not the keypad, but on the control panel (circuit board), which we regularly repair nationwide by mail for $39.95 postpaid in about a week.

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.

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.

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

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William E. Miller
[email protected]
http://www.microwavedisplay.com

The most common causes for a lack of heating are a bad door switch, a loose connection on the magnetron, a bad magnetron, bad connection on the control circuit board, a bad relay on the board, bad high voltage diode, or bad high voltage transformer. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your model number here: http://tinyurl.com/gv383

This is usually caused by either a bad door switch, a loose door switch mount, or occasionally a problem on the control panel.

Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.

Door switch or mount trouble can be caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. Other times, it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

One test that sometimes helps is to gently lift up on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

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:.

You can find helpful exploded view diagrams and order parts by entering your full model number here.

There may also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases.

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

Unplug the thing, open it up, and carefully take off the pad button controls and anything else with wrong behavior, and wash those things out with dishsoap and deionized water.  It seems like a pad switch has saltwater or sugar in it, or crumbs pressing on it.  The door and main switch often need cleaning out also, though compressed air or cotton swabs (no excess water) will be fine.  Then put it back together, plug it in, and try it.

Either a shorted high voltage rectifier diode or magnetron.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.


Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/mag_test.html

I'm confident this will be a FixYa! We're happy to help you and we'd appreciate your thoughtful rating of our answer.

Asta, the cavity light runs through the secondary door switch which is the top one. Sometimes during shipping these switches get knocked loose from there mounting and the oven starts doing some funky things. You can remove the control panel and get a look at these switches, they will be to the left. See if they are all secure in their mounts. Also check the p-4 harness on the board, re-set it. This is where the cavity light relay harness is. If it's new, call for warranty service...high voltage here, be careful....Catriver...post back.

Get the door safety interlock switches tested for continuity and alignment, by a qualified service engineer. If a door switch is not switchimg. there will be no power to the magnetron and no heating.

Question edited for clarity and typos. This is the only one available online. Microwaves are so inherently dangerous inside, Service Manuals are strongly restricted from public access. Make sure his medical and life insurance is up to date. http://www.uncleharrywizard.com/nephewclub/wizardrange/whirlpool-kitchen-aid/8178573-km-30-whirlpool.pdf Have a read. The Triac will be hard soldered to the mainboard or power board, so just look for the one with the same number. https://www.fixya.com/support/r29874712-repairing_microwave_ovens ..

1. Clean the door sensors: If your microwave is showing "DOOR" when you press start, it's possible that the door sensors are dirty or obstructed.Try cleaning them with a soft cloth or cotton swab23.
2. Replace the door switches: If cleaning the door sensors doesn't work, it's possible that one or more of the door switches are faulty and need to be replaced. You can follow this video tutorial to replace the door switches yourself3.

If none of these steps work, it's best to contact a professional or the manufacturer's service center for further assistance. I hope this helps!

All about repairing Microwave Ovens. https://www.fixya.com/support/r29874712-repairing_microwave_ovens ..