Ticking sound when running microwave

SOMETIMES A DOOR SWITCH GOES BAD AND BACK FEEDS POWER THAT RUNS THE FAN AND IF IT HAS IT SOMETIMES THE TURNTABLE TOO SO YOU HEAR THE FAN RUN ALL THE TIME BUT TYPICALLY IT IS NOT HEATING. YOU COULD PUT A SMALL CUP OF WATER INSIDE TO SEE IF IT IS HEATING, PROBABLY BAD DOOR SWITCHES OR BAD CONTROLLER.

There should be a buzzer sound that is made by a piezo. If it isn't sounding correctly then it must have a bad solder joint on it, or the ic that controls it is malfunctioning

Sounds like the control board. Not many parts in a microwave oven. That is the only one that generally goes intermt

HI:
The most common reason for no heating is the High voltage diode fails causing the no heating problem, if you are hearing so sort to ticking sound the diode may of come loose from the high voltage capacitor inside the unit and is sparking. I would have the unit checked for loose connections inside the unit, I don't unless you have experience working on microwaves, recommened you try repairing it yourself, as there is alot of voltage on the capacitor circuit of microwaves, at least 10,000 volts at its terminals, and need to be discharged before any service is atempted.

Hi,

Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Basic Microwave Oven Troubleshooting Tips

heatman101

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Suggest you pull the plug out, remove outer cover and place a cup of water into the micro. Set power to minimum then switch on and take note if the fan works or not. If not, switch off immediately and have it replaced(magnatron will burn out if left to run without fan.)

Hi

3 things can fail - the control board, the inverter board, or the magnetron. If the microwave runs for about 7 seconds with a ticking sound..then stops and shows "F-9", it is the magnetron that has failed. The fact that the unit starts and runs with the TICKING SOUND means the control board is sending signal to inverter board and the inverter board is sending signal to magnetron. Magnetron is covered by full 5 year warranty, inverter board is only 3 years.

If this is not the case then it could be a defective control board, inverter or line voltage too high.

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Thanks
Rylee

Hi,
F-9 error code indicates a defective control board, inverter or line voltage too high. f the microwave runs for about 7 seconds with a ticking sound..then stops and shows "F-9", it is the magnetron that has failed. The fact that the unit starts and runs with the TICKING SOUND means the control board is sending signal to inverter board and the inverter board is sending signal to magnetron. Magnetron is covered by full 5 year warranty, inverter board is only 3 years.

If this is a "SmartWave" branded microwave oven then F9 is an error that indicates an inverter board or magnetron has failed. Either way.. Try this...With the F9 error cleared, start the oven and listen for a ticking sound. The inverter will attempt to 'fire' the magnetron 5 times.(ticking sound). If can hear ticking, replace magnetron....Else in may be a door switch problem

F9 is an error that indicates an inverter board or magnetron
has failed. With the F9 error cleared, start the oven and
listen for a ticking sound. The inverter will attempt to
'fire' the magnetron 5 times.(ticking sound). If can hear
ticking, replace magnetron. Check owners manual. Part may be covered by limited warranty.