Question about LG Microwave Ovens
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Posted on Jan 02, 2017
It could easily be a bad line fuse and/or line filter. To access you will need to unplug the unit and remove the outside case. Inside the unit, where the A/C power cord comes in, there should be a small circuit card (part #237068) located somewhere with a fuse mounted on it. This is your input line filter board with line fuse. Replace the fuse, first and see if this fixes your problem. This is a 20amp appliance fuse that you can purchase at any hardware store. Make sure you place the cover back on the unit BEFORE you plug it in. It is not safe to have this area of the microwave exposed with power applied. High potentials in the 4,000 volt range are present! If the fuse does not correct your problem, the circuit card runs about $26.00. Good luck and hope this fixes your problem.
Posted on Aug 04, 2007
SOURCE: Advantium oven has no power
A microwave can be dead for many reasons.
If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the thermostat to open. When it cools, it closes the circuit and allows power through again.
If it's intermittent or random, it may be a bad connection, usually on the control board or fuse holder.
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 the fuse is good, it may be an open thermostat or thermal cutout on or near the magnetron or on top of the cavity / body of the oven.
If you or a friend decide to look into it, we have critical safety information and disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk
You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383
Posted on Nov 18, 2007
SOURCE: possible power surge?
Sounds like you got a surge which damaged the control panel. This is the most likely thing. We regularly repair these control panels nationwide for $32.50. A fuse is designed protect against excessive current. But if you have excessive voltage (a surge or spike), it can be so fast that it gets past the fuse and damages the control panel without actually blowing it. While the panel does have surge protection to keep that surge from actually destroying the control panel, the panel is damaged and will have to be repaired. If any power line connections were broken or are suspect, I hope you have contacted the power company. Either way, I would test any affected outlets to be sure the neutral and ground are present so the voltage output is within the proper range.
Posted on Nov 16, 2006
SOURCE: We had a power surge
We repair these on a regular basis for customers nationwide with our guaranteed $39.95 service with a full one year warranty.
We have full details, plus *critical* safety, disassembly, and troubleshooting info at our site. You'll find a link to our site in our listing here on FixYa: http://tinyurl.com/yzjozk
We're happy to help and we appreciate your thoughtful rating of our answer.
Posted on Feb 28, 2008
SOURCE: NO POWER
Inside the microwave is a fuse. If you can, try plugging the microwave into a different outlet (use an extension cord). If it does not power on, you have likely blow the fuse. If you are technical, you may look into replacing the fuse yourself (you will have to remove some parts of the microwave exterior to get to the fuse). Otherwise, if no longer in warranty, you will need to have a shop or handyman replace fuse.
Posted on Mar 29, 2008
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