Question about LG LMV1650SW Microwave Oven

1 Answer

LG microwave model MV1526B

The microwave is dead..........I heard a pop and everything died. The breaker is not tripped and there is power to the outlet.

Posted by on

  • mpfort Apr 01, 2009

    The first thing I noticed was that the light (not internal light, but the one that shines onto the stove surface) would not come on. I thought we had blown the bulb. A few minutes later I opened the door and there was a flash, a pop and the whole unit went dead. My husband doesn't want to work on it, and we're not sure if the unit is worth repairing. Is this an expensive fix for a technician to do? The unit is 2 years old.

  • Anonymous Mar 13, 2014

    microwave has not tripped circuit breaker also the electric outlet is fine still no power

×

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.

  • LG Master
  • 8,820 Answers

The pop leads me to suspect that the high voltage rectifier diode blew.

We have the service manual for this model and have uploaded it to our site here to help you. You will need the free Adobe Reader to view or print it.

A microwave can be dead for many reasons.

It may be the fuse, which is usually located on the floor of the oven behind the control panel or between the door switches.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

When checking thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

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 (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

You can usually 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.

Posted on Aug 08, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

No power. unit dead.


may popped the breaker would have to remove grille and control panel to confirm. unplug microwave first

Nov 05, 2013 | GE JVM1630 Microwave Oven

1 Answer

Lg microwave oven trips circuit breaker


The magnetron probably has a partial short pulling more current than normal as it runs, the other two items that give trouble is the high voltage diode, "sometimes cracks" to the high voltage capacitor, "usually shorts"

Mar 29, 2012 | LG Microwave Ovens

1 Answer

Model # JTP86WOF7WW Microwave dead no clock, no light, nothing breaker not tripped


It's fuse is already blown, hence no everything. If you can replace it with same rating and test it. If you can't call a service tech near your area.
This answer your question, Thanks for asking.

Mar 29, 2011 | GE Microwave Ovens

1 Answer

My LG LRMP1270ST microwave oven stopped working in the morning. It just flat died when I put 2:00 minutes on the timer and pressed start I heard the pop/breaking sound. So immediately I stopped the...


The main fuse has blown in the microwave, you also have secondary problem that sounds like the magnetron has failed, but there are two other parts to consider, the high voltage capacitor and diode work in conjunction with the magnetron to heat the food. The repairs could run as high as a new microwave oven.

Feb 14, 2011 | LG Microwave Ovens

1 Answer

No power everything was fine then nothing when i got home is there any fuses to check in the microwave


There is a fuse under the cover, as well as a couple of safety thermostats that can cause a dead oven. It may also be that the power transformer for the control circuit board has failed. I've seen several Sharp ovens where the transformer died because of power surges. This would cause no display and no functions even though the oven has power. Also, did you make sure the outlet your oven is plugged into has power? If it's a GFI outlet it may need to be reset, or a circuit breaker in your electric service panel may have tripped.

Hope this helps, and thanks for using Fixya!

Feb 28, 2010 | Sharp R-1850A Convection/Microwave Oven

1 Answer

Lg micorwave, lam1180st refridgerator and microwave were plugged into the same outlet. i heard a loud pop. circuit breaker popped. i reset and the frige works fine. Microwave does not have power. the...


It is possible that the interconnection link(s) between the two sockets in the duplex outlet have blown apart. Turn off power at the electrical panel for this circuit, remove the outlet from it's box, and check the interlink on both sides. If obviously burned, replace the socket. A better option is to run another duplex cable from the breaker box to the outlet from a new breaker, cut the interconnections on the new socket, and wire the new cable to the isolated part of the socket. This supplies full power to each half and allows both units to run at the same time.

Oct 19, 2009 | LG 1.2 Cu. Ft. Mid-Size Microwave -...

3 Answers

No power from Whirlpool.


IF YOU HAVE THE MICRWAVE PLUGGED IN AND THE CIRCUIT BREAKER TRIPS IMMEDIATELY WHEN SET,
CHECK THE DOOR HOOKS THAT TRIP THE DOOR SWITCHES. BOTH SHOULD BE SPRING LOADED. THERE SHOULD BE TWO HOOKS ON THE DOOR. IF O.K., CHECK THE DOOR SWITCHES. THERE ARE AT LEAST THREE. IF ONE OF THEM IS SHORTED CLOSED,
THE MONITOR SWITCH WILL CAUSE A DEAD SHORT ACROSS THE FUSE. THE FUSE MAY BE HOLDING BETTER THAN YOUR CIRCUIT BREAKER.

Mar 21, 2008 | Whirlpool MH1150XMQ Microwave Oven

1 Answer

Service to Whirlppol MH7130xez-1, circuit breaker popped then unit went dead


water may have leaked inside unit causing a short.the transformer output is about 1400 volts that feeds a large capacitor. a direct short can blow the transformer instantly or any support parts without time to burn something. creating little or no smell. I never sujest that a person
to try to repair a microwave oven because
the capacitor can still be charged and very lethal.

Feb 25, 2008 | Whirlpool MH7135XE Microwave Oven

Not finding what you are looking for?
LG LMV1650SW Microwave Oven Logo

871 people viewed this question

Ask a Question

Usually answered in minutes!

Top LG Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

8820 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

sonic boom...
sonic boom...

Level 3 Expert

1557 Answers

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

Answer questions

Manuals & User Guides

Loading...