Was wondering if any of you appliance gurus could help me out. I have a rental home that my tenant just moved out of. After she moved out, I was there cleaning up and tried to heat some food up in the microwave. The microwave turned on and looked normal like it was heating the food but it didn't. My new tenants moved in and tinkered with it a little by trying to digitally adjust the power settings but they said it read "cannot adjust power settings at this time" or something like that. Does anyone know what could be the solution?