If your bulb blew out violently it could have damaged the main circuit board that supplies power to the lamp. Never buy the cheap bulbs at home depot or lowes when they blow, a lot of the time they take out the main board too, either blowing a trace off of the board or fusing the relay contacts together so you cant turn it off. So much for saving money on a bulb
Have you checked to be sure your circuit breaker or fuse is not blown or tripped?
SOURCE: the door sticks on my microwave oven
Usually this is due to loosened mounts inside the oven. The mounts hold the door switches and grab the door hooks when it the door is closed. The solution is to realign and tighten the mount screws inside. It's less liekly, but it could be a weak or worn door open lever inside. I only advise people to work on a microwave if they're fully informed and aware of the deadly hazards and necessary precautions.
SOURCE: Microwave Oven Problem
Quite often this is due to a bad door switch. Opening the door while cooking (without first hitting the STOP pad) is the primary cause of door switch failure. It's probably not actually heating with the door open, but better safe than sorry! If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) 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 full model number (without the suffix) here: http://tinyurl.com/gv383
SOURCE: Kenmore Microwave Model 721.80593402
This is usually a broken or misaligned door switch mount or possibly a bad door switch.
If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and
disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk
You can find an exploded view by entering your model number here: http://www3.sears.com
SOURCE: Frigidaire Gallery Microwave doesn't heat
With the symptoms you
have, I would most strongly suspect a failed high voltage transformer, which is an expensive fix.
It may also be a shorted high voltage rectifier
diode (which costs less) or a bad magnetron, or a loose and possibly corroded connection on the magnetron's terminal.
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.
There
should be a "mini-manual" (tech sheet) hidden inside the unit
behind the
control panel or hidden on the left side behind the grille, which is
very helpful when troubleshooting, testing, and locating components.
At
our Web site, we have a video
available showing how to remove a typical
over the range control panel assembly in under 5 minutes.
If you don't find yours, or if you want to look at it without disassembling the oven, you can download it here.
You can usually find
helpful exploded view diagrams and order parts by entering your full
model number here.
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/xformer.html
http://www.gallawa.com/microtech/diode.html
(if it's not shorted or burned, it's
probably okay)
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/cap_test.html
You can
download Frigidaire / Whirlpool owner's manuals and installation
instructions here.
They make removing the oven from the wall for service (or replacement) much easier.
We're happy
to help you with free advice and we'd appreciate your thoughtful rating
of our answer.
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