Microwave works but won't heat

The most common causes for a lack of heating are a bad door switch, a loose connection on the magnetron, a bad magnetron, bad connection on the control circuit board, a bad relay on the board, bad high voltage diode, or bad high voltage transformer. GE microwaves come with a mini service manual inside, which is very helpful. Since it's only 2 years old, the magnetron would still be covered under warranty, but you would have to pay labor and service call charges. You can find helpful exploded view diagrams and order parts by entering your model number here: http://tinyurl.com/gv383 If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk Otherwise, if you pull it from the wall yourself and take it in for repair, you can save about $50 or so. It is a 2-person job since it's heavy and awkward, and it helps if you have the original installation instructions. Feel free to follow up here if you need more help. We appreciate your thoughtful rating of our reply.