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Won't start is the most common symptom for Kenmore 721.66299500 (72166299500, 721 66299500). 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 Kenmore 721.66299500. So, if your 721.66299500 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 Kenmore 72166299500
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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The Time Delay Fuse is an OEM part for LG microwaves. This fuse provides a safety mechanism by delaying the flow of electricity, protecting the microwave's electrical components from power surges and ensuring the appliance operates safely. It helps to prevent immediate damage in the event of a power surge or electrical fault, thus prolonging the lifespan of the microwave.
Over time, the time delay fuse can become damaged due to electrical surges, wear and tear, or faulty connections. If the fuse blows, it can disrupt the microwave’s ability to function correctly.
Symptoms of a bad time delay fuse include:
This OEM LG part is also compatible with Sears/Kenmore models.