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Won't start is the most common symptom for Lg LTM9020B. The instructions below from DIYers like you make the repair simple and easy. Many parts also have a video showing step-by-step how to fix the "Won't start" problem for Lg LTM9020B. So, if your LTM9020B microwave not heating, not working, won't run at all, won't start up or won't turn on, the following info will help you identify the problem.
Parts for LG LTM9020B
The Microwave Door Switch is an OEM replacement part for LG countertop microwaves. It monitors the door position electrically to prevent unsafe oven operation if ajar.
Symptoms of a bad door switch include:
Causes involve normal wear of electrical contacts and internals through many open/close uses. Exposure to moisture intrusion from spills may potentially damage sensitive switch circuitry over time as well.
This genuine LG replacement switch is also compatible with Sears/Kenmore microwaves.
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