A problem with the thermal fuse or cut out could be the reason your microwave won’t turn on. The thermal cut-outs, also known as thermal fuses, help keep the oven from overheating. When the thermal cut-outs fail, your microwave won’t turn on as a safety precaution to keep it from getting too hot.
What do you do if your microwave won’t turn on?
Start by checking the wall plug to ensure the microwave is plugged into power. Next, check the door switch and the door latch assembly. The microwave won’t start if the appliance believes the door is open. Next, check the two fuses, the thermal fuse, and the ceramic fuse, to see if they need to be replaced.
What causes a microwave to suddenly stop working?
The most common cause for a microwave oven not working at all is a blown main fuse. … When this happens, the fuse is considered “blown” and the fuse will need to be replaced with a new one before the microwave will start working again. The main fuse is not the only fuse found in microwave ovens.
Is there a reset button on microwaves?
Most microwave ovens do not include a reset button. … The most common way of reseting your microwave is called a hard reset. A hard reset happens when you physically unplug the microwaves’ cord from the wall outlet.
How do I know if my microwave fuse is blown?
It’s easy to tell if a glass fuse is blown; it will show scorch marks, and the filament will be melted. To check a ceramic fuse, use an ohmmeter or continuity tester. With an ohmmeter or multimeter, you should see a reading close to zero ohms if the fuse is intact, or infinite if it’s blown.
What happens if microwave fuse is blown?
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.
Is it worth fixing a 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.
How long should a microwave last?
The average microwave oven lasts about seven years with normal use, and even less with heavy use and poor maintenance. A large family may find themselves replacing their appliance every four to five years as they become more reliant on its use to heat up snacks and leftovers, or to defrost meals.
Is there a fuse in a microwave?
Fuses are located in many places inside the microwave, including the top, side, and behind the vent grille. Using the wiring diagram can help you locate the appropriate fuse. Once you have located the fuse, remove any necessary wires and fasteners to free it from the microwave.
How do you do a hard reset on a microwave?
Press and hold the START/ENTER key again for approximately 4 seconds. The L indicator or lock icon should disappear from the display. If the controls are still not responding, attempt a reset on the microwave by unplugging the unit for 2-3 minutes. Plug the microwave back in and attempt the use the microwave again.
Can you fix a microwave?
A standard microwave oven is actually a simple device comprising of a transformer, diode, capacitor, a fuse and the magnetron valve. All can be tested and replaced to fix a non heating oven.
What can go wrong with a microwave?
6 common problems with microwave
- Microwave does not heat.
- Microwave runs and then stops.
- Microwave buttons do not work.
- Microwave plate does not spin.
- Microwave light-bulb does not turn on during operation.
- Sparking inside microwave.
10 июн. 2015 г.
How much is a fuse for a microwave?
Fuse replacements for a microwave cost between $50 and $100 on average. This is one of the cheapest and simplest microwave repair jobs.
How do you tell if a fuse is blown?
Remove the fuse from its holder. In some cases you may need a small screwdriver to unscrew the fuse holder cap. Look at the fuse wire. If there is a visible gap in the wire or a dark or metallic smear inside the glass then the fuse is blown and needs to be replaced.
How do you tell if a ceramic fuse is blown?
A homeowner can determine if a glass fuse in blown by performing a visual inspection and looking for a break in the thin wire and a brown discoloration in the center of the fuse. A ceramic fuse, however, shows no damage upon visual inspection. Testing a ceramic fuse is the only way to tell if the fuse has blown.