20 Most Recent LG LMV1813ST Microwave Oven - Page 5 Questions & Answers


Contact LG directly to request a schematic diagram of the model MS305A power supply.

LG Microwave... | Answered on Jun 28, 2018


Yes, I have had the same problem repeatedly.
It turns out, GFI's are not made for Microwaves, many electric motors, etc.
I had to give up trying after a couple years.
I now do not plug microwaves into GFI's.
God bless your efforts.

LG Microwave... | Answered on Jun 04, 2018


did u check plug n internal fuse..lol. my diode that went to earth was the culprit coz my microwave leaked into base and diode to stop leakage to earth had blown

LG Microwave... | Answered on May 04, 2018


  • Open internal fuse
  • Magnetron failure
  • Door interlock failure
  • Control board failure

LG Microwave... | Answered on Mar 30, 2018


A dead short somewhere in the microwave. I never recommend a DIY on a microwave. They store voltage that will kill you if you don't know what your doing, too they could make you glow in the dark if not shielded while servicing.
Time for Tech service or replacement.
Sorry to be the bearer of bad news.
BTW I assume you mean breaker in the breaker box not a GFIC breaker. If GFIC it could be a breaker that's gone bad.

LG Microwave... | Answered on Mar 07, 2018


won't sit peoperly if you dont
probably won't cook properly if you don't
the revolving plate does that same thing as a fan forced oven

LG Microwave... | Answered on Mar 06, 2018


1st try unplugging it and plugging it back in.
2nd The key pads can appear to be locked when it's just pushing the right buttons that fixes it.
I have run into that more than once myself.
I'm clever and it took me a while to find the right one.
It usually had something to do with setting the clock.
Try pushing each one from left to right & top to bottom just like you read. One of them probably will give you options.
Not likely but it is possible it could be 2 buttons at the same time but I've never run into that.

LG Microwave... | Answered on Mar 05, 2018

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