SOURCE: Maytag Rangehood Microwave Loud Humming
Sounds like you just fried your magnetron. Normally when they go bad, they make a very loud noise like what you described. The smell concerns me because you may have ruined the waveguide as well. If the magnetron burns through the protective painted surface of the waveguide, the waveguide is ruined. In most microwave ovens this means replacing the entire unit because the waveguide is not replaceable. Putting a new magnetron in a damaged waveguide will result in the same arcing and eventual failure. In addition to the magnetron, the following components are part of the same high voltage network: HV Transformer HV Diode HV Capacitor Magnetron Thermal Cut-Out Any one of these components could have also been damaged. I DO NOT recommend taking any voltage measurements inside the HV network. Potentials of over 4000 volts can be reached and make it very dangerous for the do-it-yourselfer. Taking resistance readings with the unit unplugged is strongly encouraged. If you decide to pursue a repair, inspect the magnetron tip and inside of the waveguide first. If the magnetron is melted and/or there are burn marks inside the waveguide, a new microwave may be a in order. This actually may be a better option than an expensive repair. I hope you find this advice helpful.
SOURCE: kenmore microwave model 721.62644200
We see this a lot. The problem is on the control panel, which we regularly repair nationwide for $39.95 postpaid.
This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.
This can often also affect the exhaust fan operation, too. The lights and fan can be inoperable or stuck on too.
Details of our service and critical safety information and disassembly information is at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
We're happy to help and we appreciate your thoughtful rating of our answer.
SOURCE: turntable microwave oven (model JE1540WW 002) (serial ZR943877S)
Chances are that it is not actually microwaving, but that can be checked by placing a small cup of water inside.
Overall, though, it's not a good idea to run it if it's not working right.
This problem is usually caused by either a bad door switch, a loose door switch mount, or a problem on the control panel.
Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.
Door switch or mount trouble can be caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.
If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
You can find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383
There should also be a "mini-manual" hidden inside the unit behind the control panel, which is very helpful when troubleshooting.
If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases.
We're happy to help and we appreciate your thoughtful rating of our answer.
William E. Miller, AS-EET
[email protected]
http://www.microwavedisplay.com
SOURCE: Humming sound, F9 and dead
Seems like I answered this, but maybe it's a different poster.
The 721 model code means it's an LG/Goldstar-made oven and F9 indicates a problem with the inverter or magnetron.
Due to the lethal voltages involved, I do not recommend that a person without training and experience ever work on these models.
I would suggest you contact Sears for service.
We're happy to help you and we'd appreciate your
thoughtful rating of our answer.
SOURCE: GE Spacemaker XL1800 Microwave
You need to take apart the oven and fix the turntable gear, then reassemble it, it is not a difficult job. Always work with power unplugged.
1,111 views
Usually answered in minutes!
×