Everything works, clock, timer, lights etc. When I put in the time and press start, lights are on and cook time starts, but there is no sound and no cooking. Thanks

it has a fuse located behind the main control panel. you will see it after you remove the cover

From the description one of the door switches is defective, or a more serious problem has developed.

HELLO.

This is the solution to reset your microwave.

1 Pressing the clock button will display the time. You can also use this to know what time it is while cooking.

1. Set the clock by pressing the "Clock" button.

2. Turning the dial on the GE sensor microwave oven will display the hour of the day. Once you have found the correct hour, press the dial in.

3. Again, turn the dial to set the minutes of the day. When this is completed, you will need to press the dial in again on the GE sensor microwave oven.

4. When the time and minutes are set, turn the dial again for a.m. or p.m. Then you will need to press the dial in to save the settings.

5. Press the "Start" button to allow the clock to begin on the GE sensor microwave oven.

Thanks.

Burnt wires or connections at or bad door switch.

it could be a defective thermal fuse,h.v. cap,h.v. diode or the magnetron tube are defective

Sounds like you have a bad door switch. make sure each button on the top of the switches snaps back up after it is puched down. Also, look at the wires where they push onto the switches. if any of the plastic insulators look brown you have a bad connection there and will need to replace the switch and the terminals going to it.

What is the make and model number?
Eric

Pressing "timer/clock" button 4 times turns on and off demo mode.

check magnetron related circuit and replace magneron, check condencer, diode and etc.,

look on the back panel for any hole with a "RESET" label next to it. insert a small pin to reset your microwave