Question about GE XL1800 1100 Watts Microwave Oven

1 Answer

Reversed polarity a problem?

We just realized the polarity of the outlet that feeds our microwave was reversed. Can anyone hypothesize on whether this could be leading to HV problems? The MW produces a loud humming/buzzing, no heat. The dome on top of the magnetron shows some charring. Have replaced magnetron once already.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • GE Master
  • 9,098 Answers

The polarity won't matter to the normal functioning, but to ensure safety in case of a short, it should DEFINITELY be corrected.

You probably have a bad magnetron (again) and possibly a bad high voltage rectifier diode too.

GE had a campaign (but not a recall, mind you!) covering several models.

Details are in their bulletin at http://207.234.249.73/mwd/ge_mw_mag_kit_bulletin.pdf

The parts kit (that GE used to pay for) is part # WB27X10489 and is shown in the photo below.

If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is 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

Chances are GE won;t cover any of this, but just in case you want to contact them, GE Customer Service is at http://www.geappliances.com/service_and_support/contact/

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

Reversed polarity a problem? - b09f57c.jpg

Posted on Jan 20, 2008

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Microwave run but won't get hot


If your microwave oven doesn't heat, you may have a problem with the high voltage diode or rectifier. This component helps provide the high voltage that powers the magnetron. The high voltage diode is located near the magnetron and the high voltage capacitor, so access will require removal of the cabinet. Disconnect the power and also discharge the high voltage capacitor to prevent an electrical shock. You can then test the diode for continuity with a multi-meter. Diodes are polarity specific and you should see low resistance with the meter leads in one direction and higher resistance when the meter leads are reversed. Most multi-meters will have a special setting for diodes or rectifiers. If the high voltage diode shows low resistance in both directions or shows no continuity at all, then it will need to be replaced. If you find the high voltage diode tests okay, then you will need to determine whether power is being supplied to the circuit. This is a high voltage circuit and further testing should only be performed by a qualified technician.

Jan 06, 2018 | Microwave Ovens

1 Answer

How to get full power from outlet???


If you are getting your microwave to turn on then you are just fine on your outlets. They should be putting out 120v. You just have an under powered Microwave.

Dec 14, 2015 | Microwave Ovens

1 Answer

Sharp carouse ii microwave makes a stress noise and not heating


Your high voltage power diode has most likely failed. That or the magnetron itself has failed where as the oscillator is stuck. My bet is the power diode is what has failed.


(UNIT UNPLUGGED)
First off short out the capacitor AFTER removing the outer chassis with a screwdriver. Hold the screwdriver back on the handle and short across the 2 capacitor terminals. Locate the power diode that will be the wire that is metal. Remove it from the capacitor. Use a meter and read continuity of the diode. Reverse the test leads and read continuity again. In one polarity it is supposed to read like a wire (ZERO Ohms) and in reversed polarity it is supposed to read infinity. (Open) If you get open or short in both directions it has failed.
Diode PN is:
FH-DZB007MRY0
Sources:
http://www.partstore.com/SearchResults.aspx?q=FH-DZB007MRY0&SearchTerm=True

http://www.repairclinic.com/PartDetail/H-v-diode/FHDZB007MRY0/1913632

http://www.pacparts.com/model.cfm?CFID=1167106&CFTOKEN=86a0b11f39d05716-5BB5A182-D087-7AB9-C3CFB68FBA1B156C&mfg=SHARP&model_id=R530AK&row_start=11&src_model_id=R530&action=list_part

You can change this part and still have a problem with the magnetron... usually though a diode change brings them back to life.

One more thing to do is check the capacitor.... you probe the terminals with the meter on R x 10,000 and watch for a brief jump in resistance and then the meter drifts to infinity. Reversing the leads your looking for the same result each time you reverse the test leads. If you get this reading... the capacitor is probably good.

Thanks for choosing FixYa,
Kelly

Sep 05, 2011 | Sharp Carousel R530EST Microwave Oven

1 Answer

Magnetron Ready to be Reinstalled but...


The sensor you detail has no polarity. It can go "either way"
For goodness sake be careful, I don't want to scare you but more servicemen, & would-be-servicemen die each year "trying" to service Microwave ovens. They are lethel, or rather the Main Capacitor is, it stores enough Joules to kill someone 10 times over.. Always ensure it is discharged to earth before working on anything.
Be careful.

Jan 21, 2010 | Microwave Ovens

2 Answers

Microwave fuse blowing???


You really need to check that circuit for ground and neutral faults before using it again.

Aug 29, 2009 | Panasonic NN-H275 Microwave Oven

1 Answer

Microwave Buzzing When Not in Use


Are you using a 3 pronged outlet and is it grounded? If you have a 2 holed outlet and are using a ground eliminator adapter, try turning the plug around to reverse the polarity. If this helps, then it would be advisable to have an electrician to ground your oven.

May 22, 2008 | Whirlpool MH7140XF Microwave Oven

Not finding what you are looking for?
GE XL1800 1100 Watts Microwave Oven Logo

190 people viewed this question

Ask a Question

Usually answered in minutes!

Top GE Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9098 Answers

vince

Level 3 Expert

1216 Answers

D. E. Hev

Level 3 Expert

1181 Answers

Are you a GE Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...