20 Most Recent
Emerson MW8778 Microwave Oven Questions & Answers
Microwave Quit Heating
The Magnotron goes out on many of the lower priced models in the first yr.,(and some of the higher end ones too!) As the components there do most of the hard work. Better to just find a recycler who takes them and scrap it.
As for the replacement that sounds like an excellent idea!
It lights up but the buttons won't work, what is wrong with it?
Check inside the oven chamber and look for missing powder paint or signs of arcing, if so dispose of the microwave. If the inside is good remove all the screws and remove the cover. If the magnetron was making louder noises prior then replace the magnetron. the giant capacitor could be bad. While the cabinet is open make sure to look for burned wires, check the continuity of thermal cutoffs, and check the main circuit-board for burned traces or components. The relays in most electronics are known for arcing (spot welding) and staying in the wrong position. Tap them hard with the back end of a screwdriver. During all of this use safe electrical practices by having the power cord unplugged. The capacitor could still have a high charge on it so be careful.
Microwave won't work/no power
Then you have blown a fuse. Check inside the oven chamber and look for missing powder paint or signs of arcing, if so dispose of the microwave. If the inside is good remove all the screws and remove the cover. Replace the fuse. If the magnetron was making louder noises prior then replace the magnetron. Since the fuse went the giant capacitor is likely bad. While the cabinet is open make sure to look for burned wires, check the continuity of thermal cutoffs, and check the main circuit-board for burned traces or components. The relays in most electronics are known for arcing (spot welding) and staying in the wrong position. Tap them hard with the back end of a screwdriver. During all of this use safe electrical practices by having the power cord unplugged. The capacitor could still have a high charge on it so be careful.
My microwave lights blinked off right after i
I suspect the interlock monitor switch in your microwave oven is the culprit. This is one of several switches operated by the door latches. It's designed to blow the fuse if you try to run the microwave with the door open. The switch is probably stuck, or is out of adjustment (which can happen if the oven door gets closed hard), and when you restarted the oven it blew the fuse. It is possible to adjust or replace the switch as necessary, but it might not be worth it. You should have a professional do the repair as there's a chance of microwave leakage if repairs involving the door aren't done properly. Between labor and parts, the repair cost might come close to (or even exceed) the replacement cost for a small oven.
Hope this helps, and thanks for using Fixya!
Micro wave simply quit. How an I check to see if
The fuse is located inside the microwave. You will need to remove the front panel to get to it. It will be located on the black power wire inside the microwave and installed inline. Make sure that the microwwave is unplugged before removing the front panel. Once you locate the fuse inside you will need to remove it and test it with a continuity tester to see if it is blown. If it is make sure you replace the fuse with the same amp rating you found. If the new fuse blows again then there is an electrical short somewhere inside the microwave.
Does not heat
try checking the door switches. they can get just loose enough to not make good contact. the door may be sagging just a fraction.
good luck
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