Question about Whirlpool MH2175XS Microwave Oven

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Fan stopped working. I am looking for the fuse.

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Posted on Sep 10, 2010


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I would guess, I do not know for sure that the fa motor seized and blew the fuse, during the process the internal protection device on the fan motor opened giving you exactly what you are describing.

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No power - blown fuse?

If it was run without the fan a thermal protect device was more than likely taken out. Check for that and replace the fan.

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Lights and fan quit working

there are fuses inside the microwave but there not the kind you would have in the house,,unless you can buy them it cant be fixed by you,

Jul 03, 2010 | Hotpoint RVM1635 Microwave Oven

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My MH1150XMS-4 just stopped working suddenly.

The main fuse or the thermal cutout is probably blown. If the main fuse is blown, most likely the high voltage capacitor is shorted and must be replaced. If this is the case, it's a good idea to also replace the high voltage diode because it took a large over-current hit before the fuse blew. Be sure the oven is unplugged before measuring the resistance of the fuse or capacitor (the diode should read open in both directions because the forward voltage is more than a typical ohmmeter can put out). (Note: replacing the fuse without identifying and fixing the short or overload will simply waste the new fuse. It's not like the old farmhouse with one fuse for a dozen outlets going out because one item too many was plugged in.) The capacitor is available on Amazon for less than $17 (be sure the voltage and uF values match the one in your oven), the diode is about half of that, and the fuse should be under $3.

If the thermal cutout is blown, check the magnetron cooling provisions - make sure the fan turns freely, the blades are clean, and all vents are clean. After replacing the thermal cutout, verify that magnetron cooling fan runs at speed when the oven is running. Keep your hands and tools out of the oven if you are testing it with the cover off. The high voltage side can be energized by as much as 1800 Volts. An arc from this can cause serious damage or personal injury.
Amazon com 0CZZW1H004S Kenmore Microwave Capacitor Drawing Hi Home...

Oct 18, 2017 | Whirlpool MH1150XM Convection/Microwave...

1 Answer

I have a Microwave model 721 63252300. It suddenly stopped heating. The other main components are working, fan, light, and turntable. Thoughts?

Hi! from what you have describe, it seem that your magnetron is not working that is why it is not heating. try to look for a busted fuse.

Sep 22, 2009 | Microwave Ovens

1 Answer

We had a lightning strike near our home and our Ewave OTR microwave quit, nothing works but the light inside and the vent fan comes on automatically. We've been told that there is a fuse that can be...

If the light and fan work then it cannot be the fuse. When the fuse "blows", it stops the electricity totally from flowing into the microwave and nothing will work or respond. The fuse is behind the control panel and this requires several hidden screws to be removed. Also, you must be very careful of the 2000 volt charge that is stored in the wiring further into the compartment behind the control panel. Therefore, do not attempt to open the micro control panel without proper service knowledge.
Because you say the light and fan operate, the fuse (as I stated ) is not your answer; most likely the problem is in the control panel circuit board. The circuit board is like any sensitive electronic component that goes crazy when there is a voltage surge that strikes it such as lighting throughout the house wiring. The board needs to be replaced unless you can have an electronic wizz-kid test is out and repair it , or just by a new board. By the way, the board is not cheap and may be difficult to locate since I understand the the manufacture stopped producing it.

Aug 13, 2009 | Microwave Ovens

1 Answer

Fuse keeps blowing. Why?

The HV diode in the power supply for the magnetron is probably shorted.

Jul 18, 2009 | Microwave Ovens

1 Answer

Samsung BCE1197 oven stopped working after making a noise which I think may have been the fan, maybe something caught in the fans blade or a mechanical problem, anyway I changed the fuse in the plug, still...

Since this is a UK Model, I'd suggest you contact Samsung's to find service info here.

We're happy to help and we appreciate your thoughtful rating of our answer.

May 16, 2008 | Samsung Microwave Ovens

1 Answer

No light, internal fan...then no display

The light isn't a safety issue but I would think that the fan would be.

The fan is designed to remove excess heat from unit and keep it cool. Without the fan, you're now operating the unit under conditions that it wasn't designed for.

With the unit unplugged, try removing the cover and see if a fuse has blown. If so, replace it with the EXACT value of the original.

See if the unit powers up again. Try heating heating up something for 30 seconds to see if the Magnetron is still functioning.

If so, check to see if the bulb is good. Did the bulb and fan stop at the same time? If so, it might be something in common that controls both.

Don't operate it further until you have it looked at. You don't want to cause something else to fail.

Good luck!

- Jim

Jan 31, 2008 | Maytag MMV4205 Microwave Oven

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