how to repair microwave

^{How to Repair a Microwave Oven}

1. Unplug Power and Remove Moving Parts. Be sure the power cord is unplugged and then remove the moving parts from microwave oven.
2. Open the Back Cover. There are 2 screws on right side and 1 screw on left side. They can be easily remove with normal screwdriver.
3. Check the Fuse First. After open the back cover, check the fuse first. ...
4. Inspect Door Switches. The next step is to inspect door switches. There are 3 switches in the microwave oven. See their location in the pictures.
See Inside of the Switch. Open this switch to verify. In the picture, press the button down, the contacts cannot be connected.
Buy a Replacement Part. Found the spec and model on the back of the switch, I bought a similar switch online - the grey one on the picture, ...
Install the New Switch. The following things are connect wires to the new switch and install it properly. Just reverse the operation what I did.
About Discharge Capacitor. In my case, since the microwave oven has stopped working and unplugged power for a long time and there is one discharge resistor in the ...

Full Answer

Why does my microwave suddenly stop working?

Why did my microwave suddenly stop working? Plug the microwave back in and attempt the use the microwave again. If you notice the door of the microwave does not seal properly than this is a clear sign to replace your microwave oven. Open the microwave door and firmly close it if the microwave is not cooking.

What to do when the microwave stops working?

How to test a microwave ceramic fuse with a multimeter:

• Unplug your microwave before starting this test.
• The ceramic fuse will be found near the power cord. ...
• Set your multimeter to Rx1 and touch the probes to the fuse’s terminals. ...
• If your test produces a different reading, you will need a replacement ceramic fuse.

How do I Fix my microwave?

How to fix when Samsung Microwave is not heating or has stopped working

• Ascertain that the microwave is not set to Demonstration mode. When a microwave is set on Demo mode, you can utilize all of its capabilities but it will not heat ...
• Examine the Kitchen Timer function. ...
• Inspect the door. ...
• Ascertain that sufficient clearance exists on all sides. ...

How do you fix a microwave that won ' t heat?

The first step, let's test the microwave:

• Place a microwaveable safe cup, mug, or bowl of water inside the unit.
• Press CLEAR/OFF or RESET to clear the keypad.
• Press COOK and enter 60 seconds.
• Check the water to see if it was heated.

Can I repair my own microwave?

All can be tested and replaced to fix a non heating oven. Watch the video. 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 causes your microwave to stop working?

The most common cause for a microwave oven not working at all is a blown main fuse. The microwave main fuse will cut the flow of electricity if too much current passes through it.

How hard is it to repair a microwave?

Repairing your microwave might seem like a difficult task, but more than 80% of our customers rate these repairs as “easy” or “really easy.” On average these repairs should take less than 15 minutes to complete.

Is it worth it to repair a microwave?

If your microwave is relatively new and the repair costs less than replacing it, the fix is worth it. But are microwaves worth repairing if something major is broken? Probably not. Consider getting a replacement appliance for about $100, which should work for 7 to 10 years.

How do I know if my microwave fuse is blown?

1:382:24Microwave Not Working? Fuse Testing, Troubleshooting & RepairYouTubeStart of suggested clipEnd of suggested clipThe fuse has continuity. However if the meters needle does not move or the digital display. Does notMoreThe fuse has continuity. However if the meters needle does not move or the digital display. Does not change significantly. There is no continuity. Which means the fuse has blown.

Where is microwave fuse located?

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 much does it cost to replace magnetron in microwave?

$100 to $200Replacing a microwave magnetron costs $100 to $200. This includes a part price of $50 to $100 and $50 to $100 for labor. A magnetron is the primary component that produces heat for the appliance.

What happens when a fuse blows in a microwave?

Thermal fuses will blow to prevent the microwave from overheating and potentially causing a fire. A fuse will also blow if there is a surge in electricity, which can cause a short circuit.

What's the average life of a microwave?

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.

Can a magnetron be repaired?

The magnetron is what generates the actual microwave energy in your microwave oven- thus, it's one of the most common components that need repairing or replacing.

How much is a new microwave?

Small models start as low as $50, and midsized models are typically in the $100 to $300 range. Over-the-range microwaves, or OTRs, can be had for as little as $200, but most we test cost $400 and up. Models designed only to be built into cabinetry or a wall begin at $400 but can cost more than $1,000.

How to inspect microwave door switches?

There are 3 switches in the microwave oven. See their location in the pictures. Press down the pin beside the switch and rotate the switch a little to take it out. Inspect one by one, I found one switch is little different with others, the first is press the button there is no contacts click voice, the second, found there is something burned on the plastic by visual inspection.

Where is the capacitor in my oven?

The capacitor must be discharged before beginning any repair. The capacitor is in the back side lower corner. In my oven, it is covered by a plastic sheet. Please check it online how to discharge a capacitor.

How long does it take to fix a microwave?

On average these repairs should take less than 15 minutes to complete. We break microwave repair down by common symptoms, like your touchpad is not responding, your microwave is noisy, ...

What to do if microwave is not heating?

If your microwave is not heating you need to inspect the high voltage diode, the door switch, and the magnetron. Learn to test these parts and repair your microwave. 9% of customers.

Why does my microwave spark?

Sparking: If you notice your microwave is creating sparks while running you need to inspect the internal cavity, high voltage diode, and the stirrer assembly. Learn to test these parts and repair your microwave.

Why won't my microwave tray turn?

When the tray in your microwave will not turn there might be a problem with drive motor, coupler, or roller guide.

Why does my microwave make a loud noise?

When your microwave starts making loud and unusual noises it can mean any number of things. Learn to check the drive motor, magnetron, drive coupler, roller guide, high voltage diode, and cooling fan.

Check the Power Source

If your microwave won’t turn on at all, then you need to check the power source. If your microwave does have power but isn’t working, then move straight to the next component.

Check the Turntable

The next component in your microwave to check is the turntable. The turntable is what rotates when your microwave is working.

Check the Display

Sometimes your microwave will display certain codes on the display screen (if you have one), and this will stop your microwave from working. To fix your microwave, you need to remove the codes.

Check the Line Fuse

If you still haven’t found the cause of your microwave not working, then you will need to check the internal components.

Check the Thermal Fuse

If you still haven’t found the source of the problem, the next component to check is the thermal fuse. The purpose of the thermal fuse is to cut the power off to the microwave when it overheats. When this happens, your microwave will stop working.

Check the Thermoprotector

The next component to check is the thermoprotector. The purpose of the thermoprotector is to cut off voltage to the microwave when it overheats. When this happens, your microwave will stop working.

Replace the Main Control Board

The final component that could be faulty is the main control board. the main control board doesn’t become completely defective very often, but it can happen sometimes. The problem is it’s almost impossible to test, so if you’ve tried everything else and still haven’t fixed your microwave, you should consider replacing the main control board.