Have electricity to microwave but no pwer in microwave
This previous answer should help you.
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SOURCE: Microwave MMV4205aa
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 probably download it here.
You can find
helpful exploded view diagrams and order parts by entering your full
model number from the tag on the oven here.
Your problem is likely a blown fuse, a bad magnetron thermal cutout / thermostat, or a bad oven cavity thermostat.
Accessing some components for testing and possible replacement will require you to remove the oven from the wall.
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 / Amana owner's manuals and installation
instructions here.
We're
happy to help you with free advice and we'd appreciate your
thoughtful rating of our answer.
SOURCE: maytag model mm4205aa
Quite often this is due to grease or food particles stuck to the inside of the oven or stuck on or behind the waveguide cover.
The waveguide cover is usually about the size of a playing card and held in place by a plastic rivet.
It can be fragile, and the metal edges of the oven behind it can be sharp, so be careful!
The cover and the metal behind it should be cleaned with a mild, non-ammonia cleaner.
If the cavity metal of the oven is chipped or charred, it will have to be sanded smmoth and clean.
Then you can apply some high-temperature appliance paint, available from places like Wal-Mart or Lowe's.
If your waveguide cover is burned, it will need to be replaced.
You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383
We're happy to help and we appreciate your thoughtful rating of our answer.
SOURCE: microwave has no power mmv4205aas
This is most likely a dead magnetron (microwave production) or a dead transformer.
These are the most expensive bits of a microwave, so unless it is of sentimental value, a new unit is actually cheaper than a professional repair.
SOURCE: maytag microwave model no. mmv4205aas just stopped
I'm having same problem with same model~ did you find a solution
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