Question about Hotpoint RVM1635 Microwave Oven

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Same problem but without the noise!

My microwave will activate and everything fin but it barely heats it at all!

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You probably have a bad magnatron tube. this is the heart of the system and works by exciting the molecules to heat. If you don't hear the tell tell buzzing noise then it is the mag tube. They can be costly to replace


If the timer, lights, menu, etc, all work, but the tube does not turn on (the typical power noise), could it possibly be a problem with the interlock from the door/handle when it is closed?? (the safety switch that keeps the magnetron from exciting the water molecules in the skin on your face/hands and your eyes)?? Its in the housing where the door latch inserts. Just a thought as I have seen the same prob, but if the tube sounds like it goes on (usually the lights may slightly dim from a tube's power drain to help indicate that this is the case), then your tube may not be fully functional, if at all.

Posted on Jul 27, 2009

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Microwave made a loud grinding noise while heating a cup of coffee for 1 minute,now everything is shut off. We checked the curcit breakers all ok, and there is power going to it!


see this causes and fix it. God bless you
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You need to remove the outer metal cabinet, you will then see a large square box with fins on it, this is the magnetron.
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Generally the magnetron (the part that heats the food) is the cause if everything else still works and it only works once in a while, possibly a short, but not as likely. Unfortunately replacing the magnetron is barely cheaper than buying a new microwave though you can check out repairclinic.com to decide whether you want to attempt replacing the part.

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Powers but no heat. Everything else functions


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It doesn't heat up


When the microwave won't heat, but you hear a loud buzz, you usually have a defective power diode, high-voltage capacitor, or magnetron. We recommend that you consult with a qualified appliance repair technician for help in determining the problem and deciding what to do about it.
thanks and please do not forget to accept the solution

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Microwave not heating food


The problem you are having with your microwave is a common one. Not heating is a problem that can be caused by three things. I'll list the most common solution first, the magnetron that actually does the heating is what is making that noise and has gone bad. It is possible for you to also have a bad high voltage diode that has opened up, solution two, or solution three is the high voltage capacitor is not working properly as well. From my experience with microwaves I am positive that it is your magnetron that is bad. If you are not do it yourselfer you'll need to take it to a repair shop to replace. However, if you know how to use a screwdriver and can unplug a couple of wires with spade terminals on them, then you can take it off yourself, find another one and replace it the same way you took it off. The magnetron sits behind the control panel of your microwave but on top. It has cooling fins on it and has 2 terminals maybe three depending and make and model that plug into it. It has 4 screws that are easy to get to that actually holds it in place. If you do not have a good local source like an electronic parts supply place then you can find the right magnetron at www.mwoparts.com. Be sure you always unplug the microwave before touching or trying to take the he cover off and then when you take the magnetron off also.Good luck and God bless.

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