With its operating simplicity and ease of performance, the microwave is undoubtedly one of the important components of a modern day kitchen. Today we discuss common Microwave component failures.
Common customer complaints range from
– Microwave does not switch on
– Microwave does not heat up
– Touch pad on the microwave does not work
– Microwave is making loud and unusual noises
– Microwave does not shut down
– Microwave does not switch on
– Turntable does not turn
If the microwave does not switch on, this could indicate a problem with the Fuse, which will blow if excess current is being used by any of the microwave components.
While this fuse is easily replaceable, there may be other issues that are causing the appliance to over-draw power. There might also be a problem within the High voltage circuit of the microwave, in particular with components such as the diode, magnetron, high voltage capacitor, or transformer.
If the microwave does not heat up, Most microwave ovens include a high voltage diode that is responsible for converting the A/C power output delivered by the transformer to D/C. During this process the voltage reaches its peak capacity of 5000 volts. This generates enough power so that the Magnetron is able to provide the cooking energy inside the oven. A failure in the diode will result in a lower A/C voltage reaching the magnetron, which may not be sufficient. Diode failure is often accompanied by visible signs of a burn out. Most microwave ovens are usually equipped with 3 door switches. A failure with any one of these switches can result in the microwave oven not switching on and consequently no heat is produced. Any damage to the Magnetron will prevent the device from heating up. This part cannot be repaired and will need to be replaced. If the microwave oven has been run while empty, this can also burn out the magnetron. A defective high voltage capacitor may also be responsible for the oven’s failure to heat up.
The microwave runs for a while and then stops, In most cases, this problem is caused by a defective door switch that fails intermittently. These switches should be inspected for any signs of arcing (sparking) , overheating, or burning. They must also be checked for continuity. Switches that display any visible signs of damage or that display intermittent continuity should be replaced.
The microwave buttons don’t seem to work, In most cases, lack of response from the microwave buttons would indicate that the touchpad or the control panel is defective or have been damaged (Excessive cleaning of the touchpad or improper use can cause this). Certain microwave models require that the door be shut before the touchpad is activated. Sometimes, the system gets confused when the user may hit the button a number of times. In such cases, switching off the machine and switching it on after couple of minutes helps resolve.
The microwave display does not function, Usually this type of problem is related to the functioning of the microwave display board. A complete failure in the display would indicate a problem with the main board or display board. However, if part of the display is available, there is clearly a malfunction in the display board. You might also be dealing with a display panel that is physically broken and will need to be repaired or replaced. Sometimes, this type of problem may be resolved by resetting the microwave.
If you notice any signs of the microwave not performing upto standards or norms, then schedule a service visit before any further delay.