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Even if you have the best microwave, it may need some maintenance at some point. For example, if your microwave will not turn on, chances are you need to replace a blown fuse. Luckily, installing a replacement fuse is one of the most common microwave repairs. That said, common repairs for microwave ovens still carry a serious risk of getting shocked by the electrical components. Follow our repair guide, and we’ll show you how to replace the fuse in your microwave.
If you’re wondering why your microwave keeps turning off, a bad fuse might be to blame. Unfortunately, when you perform a fuse replacement, your new fuse must match the original fuse. So, if you cannot find the correct fuse locally, contact your microwave manufacturer for a replacement. For more articles on microwave repair, check out our guides on replacing a microwave door, fixing a microwave door switch, and learning the frequency of replacing a charcoal filter in a microwave.
Unplug your microwave to avoid a power surge while using your metal screwdriver blade. You may suffer a lethal charge if you do not.
Tools Needed: Screwdriver, rubberized safety gloves, spare fuse
Do not touch the high-voltage capacitor or any other microwave component you do not understand.
Will a microwave turn on if the fuse is blown?
If it is a ceramic fuse, your microwave will not turn on. If your thermal fuse is blown, your microwave will shut off if you try to cook. So, you may see a digital display, but a blown fuse makes a microwave useless.
How much does it cost to replace a microwave fuse?
It should only cost between $50 and $100 to have a fuse replaced. A blown fuse is a standard electrical fault that should be easy to repair for professionals.
Is it worth fixing a microwave?
Yes, you should fix your microwave if it is five years old or newer. That said, never invest in repairs that cost more than a new countertop model.
STAT: In a US Department of Energy survey, 11 percent of respondents reported owning two or more countertop microwave ovens. (source)