Kenmore Microwave problem. Panel works, but no light, turntable, or blower.

[mike982435]

Model Number

401.80094700

Brand

Sears Kenmore

Age

1-5 years

My microwave is having issues. The control panel works, but when I start the cycle, the internal light, blower, and turntable does not start (but I still hear hear the normal hum).

Additionally, the internal light does not work when I open the door (I already replaced it to make sure it wasn't the bulb).

I checked the two cartridge fuses and the two thermal fuses. They all tested fine with a continuity test (except for one of the thermal fuses, which after reading sounds like it "tests open"). Nothing appears burnt or has a smell.

Any ideas? Thanks!

 

[jeff1]

Hi,

The control panel works, but when I start the cycle, the internal light, blower, and turntable does not start (but I still hear hear the normal hum).

Door switch/door switch mechanism issue, control board or burnt wire....start with the door switches!

LINK> Microwave Door Switch Help | Appliance Aid

Micro Switch, top or bottom

Door latch assembly with switches

jeff.

 

[mike982435]

After discharging the capacitor, I tested the switches and looked through all the wires. Nothing looks burnt. I hear a hum coming from the high voltage transformer. Since the light, blower, and turntable all do not function, is it likely to be the transformer (vs. the magnetron)?

Since this is an over-the-range microwave and a replacement is about $380 from sears, I'd like to just replace the part that went bad

Thanks again!

 

[jeff1]

but I still hear hear the normal hum

I hear a hum coming from the high voltage transformer

To me is -sounded- like the cooking was working?!

is it likely to be the transformer (vs. the magnetron)?

*If* the cooling is working/coming on...it is neither.

jeff.