Everything else works. won't heat up. sometine makes noise after cook button is pressed. Model appx. 2.5 yrs old. need it for x-mas dinner. please help
With the symptoms you
have, I would most strongly suspect a shorted high voltage rectifier
diode or a bad magnetron, or a loose and possibly corroded connection on the magnetron's terminal.
The diode is a fairly
cheap fix, and the mag will cost more.
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.
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 (if it's not shorted, it's
probably okay)
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html
We're happy
to help you with free advice and we'd appreciate your thoughtful rating
of our answer.
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When I press start it makes a loud noise like something is trying to connect like a loud buzzing noise, the light comes on and the turntable rotates. The only way you can tell that it is not working is to check the food. The model # is 721.80021000 it is 950 watts not 1500 as I thought earlier.
microwave wont heat up food
When you hit Start to
cook, do the inside light and turntable come on?
Any unusual noises? Is
it louder or quieter than usual?
Can you post the full model number?
A full Sears/Kenmore
model number has 3 digits, a dot, then 8 more digits, such as
###.########
These answers will help
me judge whether it's in the high voltage
section (magnetron, transformer, or diode) or the control section
(door switch or control board relay or connection).
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