Broken Microwave - Microwave Runs But Does Not Heat

I have a six year old broken microwave made by GE.  The microwave runs but does not heat.  The broken microwave looks like it is heating but still it runs but does not heat.  I called GE and the GE Microwave has a one year warranty but the Microwave Magnetron which is the part that heats has a ten year warranty.  Because of the Microwave Magnetron ten year warranty I had my broken microwave repaired and only paid for labor.  The total was $158.00 so if you have a broken microwave that runs but does not heat you be be able to expect a microwave repari for under $200.00