See this causes and fix it. GOD BLESS YOU A diode is an electronic component that
readily passes current in one direction only and blocks the flow of
current in the opposing direction. If your microwave's diode has become
defective, your microwave will not heat and you will hear a buzzing
noise. Test the diode to determine if this is the cause of your problem.
Replace it if it is defective. A capacitor is an electrical device
which stores electricity. A defective capacitor may be why your
microwave is not heating but you are hearing a buzzing or humming noise.
The capacitor will have to be tested to determine if this is the cause
of your problem. A defective capacitor will have to be replaced before
your microwave will work again. Make sure you discharge the capacitor before you test it, though. A defective magnetron is the third
possible cause of why your microwave is not heating, but you can hear a
buzzing noise. Test your microwave's magnetron. Replace it if it is
defective.
Power Diode
High Voltage Capacitor
Magnetron
Thermoprotector
If the microwave doesn't heat the
thermoprotector may have tripped. This is a safety device to prevent the
microwave from overheating. It can be tested for continuity to see if
it's blown.
Main Control Board
If the microwave doesn't heat the main
control board may be defective. This is not common. When a microwave
doesn't heat the problem is usually within the high voltage circuit;
either the high voltage capacitor, diode, transformer or magnetron.
High Voltage Transformer
If the microwave does not heat, the high
voltage transformer might be burned out. Microwave ovens produce a very
high voltage in order to power the magnetron antenna, which emits the
energy that cooks the food.
SOURCE: EM-G5596V Sanyo Microwave - Start button does not work
MY KIDS WERE USING THE SHARP MICROWAVE R-9H94B FOR A TIMER WITH NO FOOD IN IT. IT NOW DOES NOT WORK AT ALL. IS THERE A FUSE OR A QUICK FIX TO THIS?
SOURCE: Microwave not heating food
Hi there,
I have exactly the same problem - strange and annoying! Did you manage to fix it?
Cheers,
Ben
SOURCE: Sanyo microwave EM-3310
http://www.givemefile.net/smanuals/_microwave_ovens/sanyo/file/6419.html
http://www.repairfaq.org/sam/micfaq.htm
OK above is a service manual, this should get you into the "ball park" I have given you also a DIY repair of microwaves.
Usually, the magnetron, or High Power Diode, is what fails. Anyway perform the troubleshooting steps, and you should be able to sort it out.
BE CAREFUL. Microwaves are LETHAL.
SOURCE: My Sanyo microwave oven (model:
It sounds like the magnetron may have
either failed or is not being supplied with the extremely high
voltage required to run it. YOUR
SAFETY IS PARAMOUNT This is a job for a professional but if
you are safety clued up, here's instruction.
Make sure the !!!!any
capacitors are discharged!!!!! before attempting any sort of
repair.
Check the door interlock switches first then the high
voltage diode with either an AVO model 8 or moving coil meter on high
resistance range for short circuit, (DVM's won't show the fault!),
the capacitor can fail and go short circuit, the feed fuse on the
primary of the high voltage transformer and then finally, the
magnetron is best checked by substitution.
Hope that helps.
It sounds like the magnetron may have
either failed or is not being supplied with the extremely high
voltage required to run it.
YOUR
SAFETY IS PARAMOUNT
This is a job for a professional but if
you are safety clued up, here's instruction.
Make sure the !!!!any
capacitors are discharged!!!!! before attempting any sort of
repair.
Check the door interlock switches first then the high
voltage diode with either an AVO model 8 or moving coil meter on high
resistance range for short circuit, (DVM's won't show the fault!),
the capacitor can fail and go short circuit, the feed fuse on the
primary of the high voltage transformer and then finally, the
magnetron is best checked by substitution.
Hope that helps.
862 views
Usually answered in minutes!
×