I have a 2 yr whirlpool microwave the light under the unit went out. i replaced it with a bulb that is the same watt and size. it lights up and dims on lower setting but will not shut off.

William Miller

• 9179 Answers
• Posted on Dec 04, 2006

SOURCE: Lights under the microwave won't turn off

The problem is in the control board of the microwave. We repair these circuit boards nationwide for this problem for only $32.50. For more information you can do a search on Yahoo.com (not Google) for: microwave circuit repair It's a good idea to also send a copy of the technical note sheet from inside the oven when you send the assembly in for repair. This problem is caused when the bulbs are disconnected (or blow apart from) the sockets while the power is on. Power should always be disconnected before replacing bulbs, but sometimes they just fail on their own and short, causing them to "blow" like yours did. Also, be sure to avoid cheap bulbs, as we feel they have less chance of shorting and may hold up better.

William Miller

• 9179 Answers
• Posted on Apr 18, 2008

SOURCE: how to change light bulb under microwave

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

The first step is to unplug the oven before changing bulbs!

I have a diagram at my site which helps you find & replace many GE cooktop and cavity light bulbs. It's at http://207.234.249.73/mwd/ge_lamp_replacement.jpg

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

William E. Miller, AS-EET
http://www.microwavedisplay.com

William Miller

• 9179 Answers
• Posted on Mar 06, 2009

SOURCE: Replace light bulb on Whirlpool GMC305PDS07

You'll need to remove the outer cover (wrapper) to get to the bulb.

Always unplug a microwave before removing or installing any bulbs.

On an over the range type, remove the vent grille across the top and see if bulbs can be accessed there. There may be a panel on the bottom covering the light(s), instead.

If not, you'll have to remove it from the wall, then remove the outer cover. If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.

You can download Whirlpool owner's manuals and installation instructions here.

See these links before proceeding:
http://www.microwavedisplay.com/safety.txt
http://www.microwavedisplay.com/disassembly.txt

The screws you need to remove should be pretty obvious, but a special driver (such as a T20H type or GTXH20-100) may be needed.

Be sure to put all the screws back in the right holes, since some may be special grounding screws.

Bulbs can be had locally in most grocery stores, hardware stores, home improvement centers, and big box or department stores.

Many models use halogen lamps. You must not touch the new one with your bare skin, as the oils will shorten the bulb life.

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

SOURCE: Maytag microwave light bulb MMV5207BA/BC

A 20W, 120V replacement xenon halogen bulb with G8 base can be purchased from Lowe's.

William Miller

• 9179 Answers
• Posted on Jul 05, 2009

SOURCE: whirlpool microwave model #MH1140XMQ-1. I needed

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
[email protected]
http://www.microwavedisplay.com