Question about Whirlpool MH1140XM Microwave Oven
After the desired time for cooking has lapse and the display says end, the turntable still spins and the sound and light inside is still there as if its still cooking. my past microwave just stops everything after the timer has lapsed. is there a defect on my new whirlpool vt255??
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Posted on Jan 02, 2017
SOURCE: Whirlpool MT4155SPS
If you mean by "races" that the coooking time goes way too fast, then you may just need to reset the microwave. This is usually done by unplugging the microwave for several minutes then plugging it back in. You can also visit http://www.whirpool.com or call 1-866-698-2538 to speak with customer service. If that doesn't fix it, chances are that the integrated circuit (chip) is corrupted. Whirlpool doesn't make the chips available, so the whole control board (they may call it the "clock") would need to be replaced. If the time count sems correct, it's also possible that a sensor is bad, or maybe yopu have a bad door switch. You can do a Yahoo search for my file "doorsw.txt" to help you with the safety tips and disgnosis of door switch problems.
Posted on Oct 30, 2006
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.
Posted on Jul 31, 2007
SOURCE: Microwave stopped working
There is a internal locking mechanisim that has 2 or more switches that is usually attached with two or more screws next to the door latch side. Crack open the micro and adjust this by shutting the door then pushing this assy toward the latches untill all the switches look like they are being pushed in fully. If this doesn't solve the problem one of the switches or possibly more are defective. Call a local appliance repair center and get a switch there called micro switches.
Posted on Sep 15, 2007
That's sounds pretty strange!
Since I don't have any service data on Sanyos, I'd have to speculate.
I would guess that one scenario that could cause it would be if the turntable were turned off via the control panel, but there was a switch or switch mount problem.
I would refer you to their support people:
Posted on Dec 08, 2007
The problem is that the magnatron is not getting power. Chance is that if could be a bolwn fuse inside the unit. If the fuse don't fix it then that leaves the charging diode, capacitor or the magnatron, or high voltage xformer of which without technical epertize I would not recomend attempting to replace. good luck
Posted on May 14, 2008
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