When it comes to appliance problems, you seldom express gratitude, but you should. A microwave that won’t heat, for example, is a problem, but at least you know where to look. If your microwave isn’t creating heat, look into the heat-producing components. Unfortunately, one of the most aggravating appliance issues is one that simply refuses to start. There are a lot of things that might go wrong and keep an appliance from starting, and it can be tough to figure out what’s wrong.
Most of us use microwaves frequently, whether it’s to heat up a fast snack, reheat a cup of coffee that’s gone cold, or reheat leftovers from our favorite restaurant. Microwaves complete the job swiftly and efficiently, saving you both time and effort. So it’s understandably inconvenient when they abruptly quit operating without notice. There are a variety of issues that might be causing your microwave to fail to turn on. If you can’t get your microwave to switch on, we’ve listed everything you should check below.
How To Fix Microwave that won’t turn on
- Wall Plug
- Door Switch
- Door Latch Assembly
- Ceramic Fuse
- Thermal Fuse
Of course, if your microwave won’t turn on or respond to button presses, it’s entirely worthless. A microwave that won’t turn on might be the result of a number of issues. To begin, make sure the microwave is hooked into electricity at the wall outlet. After that, inspect the door switch and latch assembly. If the microwave perceives the door is open, it will not turn on. Then, look to determine if the two fuses, the thermal fuse and the ceramic fuse, need to be changed.
If your microwave oven won’t turn on, it might be a door switch issue. When the door is closed, the door switches, also known as main or secondary interlock switches, give power to the microwave’s numerous components, and when the door is open, they interrupt electricity. When a door switch fails, the display and controls may appear to be in working order, but the oven will not operate. Hooks or latches on the door activate the interlock switches, which are positioned within the cabinet. Remove the cabinet and unplug the unit. Wires designated common (C) and normally open (NO) will be connected to the terminals of the interlock switches (NO). A multi-meter can be used to test the switches for continuity. You should witness continuity between these terminals when the actuator button is pressed. The switch will need to be changed if there is no continuity. When the door is closed, make sure the door hooks correctly engage the switch actuator, and adjust or replace it if required.
The problem might be the ceramic fuse if your microwave won’t turn on and the display is blank. If there is a significant power fluctuation or a catastrophic failure with one of the internal components, the ceramic fuse is utilized to protect the microwave oven’s components. When the fuse blows, power to the microwave’s controls is cut off, and the microwave becomes unusable. The ceramic fuse is situated near the power cord’s entrance point inside the cabinet. Before doing any repairs, remember to disconnect the cable. A multi-meter can be used to examine the fuse for continuity. Before replacing the fuse, inspect the key components, such as the magnetron, high voltage diode, capacitor, and transformer, as well as the corresponding wire connections. Check for a shorted door switch, monitor switch, or poor adjustment of the door latch assembly if the fuse blew when opening or shutting the door. When changing this fuse, only use the component number recommended by the manufacturer.
Cut Out or Thermal Fuse
You may have an issue with the thermal cut-out if your microwave oven won’t turn on. To prevent overheating in microwave ovens, one or more thermal cut-outs, also known as thermal fuses, are used. They’re usually found near the oven chamber or the magnetron on the interior of the cabinet. If the thermal cut-out fails, power to the controls or control outputs is switched off. Remove the cabinet and unplug the unit. Remove the wires from the terminals of the thermal fuse or cut-out. If there is no continuity, use a multimeter to check for it and replace the part. Check to see that the cooling fan is working and that the airflow is not obstructed.
Door Latch Assembly
You may have a problem with the door latch assembly if your microwave oven won’t turn on. The door latch assembly is typically made of of two hooks that protrude from the door and fit into the door switch holder affixed to the microwave’s frame. The hooks will latch onto the holder to keep the door closed and touch the door switches to deliver electricity to the controls. The latch assembly is commonly composed of plastic and includes a spring to keep the hooks connected by applying downward stress. The switches may not be engaged if one of the hooks is damaged or does not have any spring tension. The oven will not turn on if this happens, and you may need to replace the assembly. To reach the door latch, unplug the unit and remove the inner door panel. The inner panel is generally held in place by plastic tangs, and removing it should be done with caution.
When To Call A Technician
If none of these suggestions work, it’s time to call a professional.
Additionally, if there is intricate wiring, electrical work, or other potential risks, as well as moving elements that you are unfamiliar with, you may want to hire a repair technician.
It’s the most secure method of resolving the issue, and they’ll troubleshoot your microwave to prevent future issues.
If all else fails, or if your microwave is older than your 20-year-old child, it’s time to replace it.
So, if the appliance simply continues failing on you, think about its age. Maybe it’s time for a new one!
When troubleshooting microwaves, keep in mind that they should be turned off. If you’re not comfortable dealing with high-voltage electricity, get an expert.
The remedies listed above are the most effective ways to keep your microwave in good operating order. Kanoe.info hopes you are able to come up with your own answer. Good luck!