my kenmore elite microwave started showing an error code (F-9). i looked up what it meant and the sears website said it was an inverter problem. the manufactuerers, lg electronics. they said that the error code was a problem with the door. when i hold the bottom of the door nd pull the top, f-9 doesnt come up nd it goes all the way through the time. the problem with that is that then the food doesnt cook nd the tray doesnt move back nd forth. if you dont do anything, the tray moves but f-9 comes up. i have no idea what to do. the repair man told me he could fix it for 412$$$ but i just got 2/3 years ago! someone please help... how to fix it or where to call or who knows what it is.... thanks a million