I have a JVM1850 that was installed 4 years ago. The unit was working fine, then a day ago I received an error display requesting a charcoal filet replacement. No filter is needed since it is vented outside. However, now the until sounds as if it is running continuously whent he door is shut and the light is on. It still works to heat food, but we keep the door open to stop the fan from running.

That's really odd. I don't believe I've heard of that one before.

I would suspect the problem is on your control board, which in most can be repaired simply and inexpensively.

A YouTube video showing how to remove a typical over the range control panel assembly in under 5 minutes, is here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

If the microwave oven is 10 years old then it is time to consider a new unit, by your description it is going into cascade failure where different parts have stopped working, the buzzing sound is the magnetron warning you, it is about to fail. The fans job is to keep the magnetron cool while it is running.

Hi,

Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Basic Microwave Oven Troubleshooting Tips

heatman101

[\]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]

after several reviews of this microwave i have found that most people are not satisfied with the model or the company. And that it seems that your problem may consist with the magnetron not being installed correctly sometimes this happens at the factory but can only be replaced by a technician. they are supposed to carry them on their truck at all times. Youll have to call GE and schedule an appt with a tech. and from other testimonies that can prove to be difficult. sorry i couldnt have been of more help and good luck

We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid with a one year guarantee.

Details of our service are at our Web site, along with a video showing how to remove a typical over the range control panel assembly in under 5 minutes.

Or you can order and install a new smart board circuit board. You can find helpful exploded view diagrams and order parts by entering your full model number here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

With the details you described, the high voltage diode might be shorted( usually HVR 1X). It is connected from the Capacitor and the chassis, or else the capacitor is the one at fault,but not common .

thermo sensensor in top of unit? small round disc,hard to see sometimes from inside. easy fix for doit urself,too expensive to shop. $15 part w/shipping,45 min to remove,replace and clean the unit

You mean NNS254? You can download your owner's manual here.

On page 4, it says, "If this appliance is to be vented inside the kitchen, be sure the charcoal filter kit is installed in the unit before you operate."

Also, on page 28, "The Charcoal Filter cannot be cleaned and should be replaced periodically every 6 to 12 months, or more often if necessary."

So the answer is "yes".

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

i just brought my sunbeam microwave like two days ago. and it will not heat up

The keypad may be bad. Most often they go bad due to moisture from cleaners being sprayed directly on them or steam from the cooktop when the vent fan is not used.

They can also go bad when the unit is stored in an unheated environment where there's a lot of air temperature change (hot during the day, cold at night, etc.)

It may also be some residue on the connections where the keypad plugs into the control board. Unplugging then replugging the keypad can sometimes clean them.

In other cases, a new keypad is needed.

If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, which is linked 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