Everthing works but won't heat

The motor for the rotator is bad. It has to be replaced.

9 out of 10 times if all else is working then it is the magnatron rod that does the heating chances are it will be more expensive than to purchase a new microwave.

That would be just a defective secondary interlock (bottom door switch) or its mount.

My help file on door switches is here.

The service manuals you need are here and here.

You can get other Sharp parts from Encompass here or you can call them toll-free at 866-779-5835.

replace or rewind the transformer.

sounds like possible magnatron or diode thats the case its not worth repairing. but if your handy then google model nuber and get the part be extreamly careful because of the power capacitor holds extream volts. turn off and allow to sit 15min before working on

The door switches are often a problem, one or two are probably defective which would cause the symptoms that you are describing.

There three area's of concern, magnetron, "heats food" the high voltage diode, "sometimes crack" the high voltage capacitor, "usually shorts"

GE Will replace the magnetron for 9 years! Mine is a 2004 model with a one year warrently according to manual. HOWEVER they did say the magnatron was covered for nine years: call 888-239-6832. When I called they said thats all they get calls for and would send out in 3-5 days. NO CHARGE. I had to ask if there was coverage longer than a year on major parts and that's when they offered the info and I eventually was transferred to the right office. Saved $120 bucks on parts alone.

HI. in most cases, this will lead to a failed Heating device(magnetron tube).It would be wise to check the Magnetron cutoff fuse to be sure of its integrity. if the fuse is blown, simply replace it. if the fuse continues to show continuity, replace the magnetron.

(((The fuse is located inside the unit along side the magnetron)))

Magnetron or Diodo went bad
Get a repair man to fix