Question: How Do You Know If Your Microwave Fuse Is Blown?

How many fuses are in a microwave?

Your microwave may have two types of fuse.

The line fuses are usually familiar ceramic tubes, about 1¼ inches (3 cm) long.

The thermal cutoff fuses are typically squat black cylinders with two prongs on the same side.

Their exact location depends on your model, but check behind the control panel..

How do you tell a fuse is blown?

After you have located your fuse box, use a flashlight to inspect each of the fuses. A blown fuse will have a broken metal line or cloudy appearance in its glass top. After you have located the fuse, be sure power is off to the entire house by pulling out the main fuse block.

How do I know if my microwave fuse is bad?

To determine if a ceramic fuse is blown, test it with an ohmmeter. If the ohmmeter reads zero ohms, your fuse is fine. A reading of infinite ohms means your fuse is blown. Replace the blown fuse.

What happens when a fuse blows in a microwave?

What Caused a Microwave’s Ceramic Fuse to Blow? Like most appliances that produce heat, your microwave comes equipped with a ceramic fuse. When the appliance overheats or suffers a dangerous power fluctuation, this fuse will blow to prevent fire or excess damage to the microwave by cutting the power.

Does a microwave have a reset button?

Press the “Off/Clear’ button to cancel anything on the display, and reset the microwave. This is a soft reset and will simply get you out of any program you have started. Press it when the cooking complete reminder appears on the display, for example, and the “Your Food is Ready” message will disappear.

What causes a microwave to suddenly stop working?

If your microwave oven won’t turn on and the display is blank, the problem may be the ceramic fuse. … If the fuse failed for no apparent reason, check the major components such as the magnetron, high voltage diode, capacitor and transformer, and associated wire terminals, before changing the fuse.

Where is a microwave fuse located?

Thermal Fuse or Cut Out They are located inside of the cabinet, often near the oven cavity or the magnetron. If the thermal cut- out fails, power is interrupted to the controls or to the control outputs. Unplug the unit and remove the cabinet. Locate the thermal fuse or cut-out and remove the wires from the terminals.

What would cause a fuse to keep blowing?

What Happens When a Fuse Blows. There are two conditions that can cause a fuse to blow. First, and most commonly, when too many lights or plug-in appliances draw power from the circuit, it can overload the capacity of the fuse and cause the metal ribbon inside the fuse to melt through.

Does a microwave have a fuse?

Microwave ovens use one or more thermal cut-outs, sometimes called thermal fuses, to protect the oven from overheating. They are located inside of the cabinet, often near the oven cavity or the magnetron. If the thermal cut- out fails, power is interrupted to the controls or to the control outputs.

Are microwaves worth repairing?

Repair or Replace Microwave A replacement appliance costs about $100 and should work for at least seven to 10 years. If your microwave is relatively new and the repair costs less than replacing it, the fix is worth it. In general, the problems worth fixing include: No light when the door opens or while cooking.