I have power to the unit, I checked the fuse - OK - nothing working on unit

If it has a turntable does that work or not?

There's likely a burned fuse inside the unit.

When you stated no power that there are no lights or fans that can be made to operate, yet fuse checks good.
On some units, the fuseholder will be mounted to a small pc board. Remove the screw that secures this board and inspect the underside for bad connections. What happens is power enters board through power cord but power is not provided to rest of oven.

Your unit is dead, mains are good, tried in other receptacles, still no power. You have a bad fuse inside the unit. Unplug. Remove the cover. Generally this requires removing all the screws on the back perimeter and lifting the cover up. Sometimes they stick due to old grease, etc. Somewhere in the area of where the power cord comes in or near the transformer there should be a small fuse in a holder. It is not a glass fuse and should be replaced with the same kind (ceramic) and value. This is important for future protection. You can get the fuse at www.mcmelectronics.com . Get a box of five for future problems. If this was the only problem your microwave should work. If it blows the new fuse you could have a shorted power transformer, bad high voltage diode, or a bad magnatron in that order. There could also be a short in the board with the display but that would be unusual. Let me know if you need anymore helpl

hardrocko

Thanks for using FixYa

There is a high voltage fuse in the unit attatched to the high voltage capacitor, it is the most common problem for microwaves not working. Also check the protective diode,the high voltage capacitor as well as the transformer if the fuse is ok. Good Luck.

HI, there is a inline fuse located inside the microwave ion the power supply board. check for continuity. replace the fuse if necessary. if the fuse is OK, replace the power supply board.

If you don't see any light in the display or from the light bulb inside it you probably need to replace the fuse inside the microwave, it should be by the place where the cord goes in the microwave.

follow the incoming mains lead into the microwave their is a small pcb with a fuse their check this first

before you replace a circuit board check the inline fuse on the unit if you take off the the front panel you usually can see the fuse it is a 20 amp fuse you will need an meter to check resistences across the fuse it should read read 1 to 2 olhs on the meter if that does not work then you need to check tstat on the megatron itself or the the cavity tstat more than likely it is the fuse

You may have a blown internal fuse. You''ll need to unplug the unit, remove the outside cover and follow the line cord and you should find the fuse.

Replace it with the EXACT same value that was labeled on the original fuse. You'll probably be able to find a replacement at any Radio Shack store or hardware store.

Replace the cover and plug the unit back in. Hopefully nothing was damaged and the unit will play again.

Please let me know if I can be of further assistance to you.

Good luck!

- Jim