20 Most Recent Emerson MW8775W Microwave Oven Questions & Answers

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

Small areas inside the cavity can be repaired. The bare spot must be very smooth. You can sand it down if needed and then repaint. There is a m/w cavity paint sold in a spray can, but I've had really good luck using regular appliance touchup paint. Just be sure the spot is very smooth when you finish. Use several thin layers of paint instead of one thick layer and you should be ok.

The output is 900 watts.

You can order it from Bi Coastal Appliance Parts @ 1-800-673-1262

PART NUMBER: 504316

Hi,

Here is a tip that will help you to figure out what is wrong with your Microwave Oven.... Basic Microwave Oven Troubleshooting Tipsheatman101

Hi,

That is not that hard to fix and you can easily buy the parts yourself online...

Here is a tip that will help you with the online buying...

How to Buy Appliance Parts Online

heatman101

wait a moment pls

Hi,

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

Microwave Oven Basic Troubleshooting Tips

heatman101

Clean the inside. especially clean the paper like wave filter

Test the high voltage capacitor, the rectifier diode.or the magnetron. If all this are fine, test the control board.

If it additionally does not spin and no light, then check also the door switch and fuse.

The diode and capacitors can br tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, even if power is off. Capacitors can get discharged by shorting their two contacts.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.

All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, contact the seller here to purchase parts. (here in UK).

LOOKK FOR FUSE UNDER SCREWED IN PANEL!

Quite often this is due to a bad door switch. Opening the door while cooking (without first hitting the STOP pad) is the primary cause of door switch failure. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk If it's NOT a bad door switch, it may be a stuck relay or other problem on the control panel / circuit board. We repair these control panels nationwide for $39.95. For details on the repair service, see our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk

Quite often this is due to grease or food particles stuck to the inside of the oven or stuck on or behind the waveguide cover.

The waveguide cover is usually about the size of a playing card and often held in place by a plastic rivet.

It can be fragile, and the metal edges of the oven behind it can be sharp, so be careful!

The cover and the metal behind it should be cleaned with a mild, non-ammonia cleaner.

If the cavity metal of the oven is chipped or charred, it will have to be sanded smooth and clean and dried thoroughly.

Then you can apply some high-temperature appliance paint, available from places like Wal-Mart, Lowe's or Builder's Square.

If your waveguide cover is burned, it will need to be replaced.

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

That makes it sound like a bad high voltage transformer.

Do you detect any burning smell?

Do the windings of the high voltage transformer seem blued or blackened?

They should be copper colored or maybe a little darker due to the varnish.