I'm wondering if this is worth repairing. When you hit the start button for either Microwave or Convection nothing happens. Has power as the light comes on when door opens.
how old is it? how much did you pay for it? how much will you pay to have it fixed? i would get a new one. might be cheaper, and you will have a new microwave..
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix microwaves.