Microwave Repair - Heating

The microwave oven works (power, lights, tray turns) but food is not being heated. Could this be a fuse or themostat problem?

ldossa
Does it make any excessive noises when it’s running? If it does then the problem could be the shorted diode or the magnetron tube. To do any repairs on the microwave is pretty dangerous and I really recommend to call the certified technician or if it’s going to be expensive just buy a new one.
Gene.

No. Transformer, megnetron or capacitor