Our KitchenAid model KCMS185J55 is not heating. It lights up and the turntable works, it just won't heat. Tim Jones [email protected]

I'm guessing you might mean model KCMS185JSS0, KCMS185JSS1, KCMS185JSS2, KCMS185JSS3, or KCMS185JSS5?

To allow us to help you effectively (at no charge), please post a NEW problem to FixYa, and please include your brand name and the full model number from the tag in or on the unit, your symptoms ("won't heat"), as well as the answers to these questions:

- When you try to microwave are the inside light, internal cooling fan and turntable all working?

- Is there any unusual noise or is it louder or quieter than normal?

We have a sound clip here of what a microwave should sound like when the cooling fan and high voltage section are working.

(A loud buzz, hum, or groan is usually a shorted high voltage rectifier diode, but a sound like gurgling into an empty coffee mug is one symptom of a failed magnetron, and yet the mag can be bad without that sound.)

- If yours is making an odd noise, which does it sound like?

BUT If you or someone you know wants to go ahead check out the diode and magnetron, see these links:

http://www.gallawa.com/microtech/diode.html
(if it is NOT shorted or burned looking, it's probably fine)

http://www.gallawa.com/microtech/mag_test.html
(continuity can be good even though mag is bad!)

You can find links to helpful exploded view diagrams and part ordering help here.

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