What to do if my LG MB-392AA doesn't cook at all even though the turntable rotates?
If your LG Microwave Oven's turntable rotates but it doesn't cook, it could be due to a malfunction in the power control switch or a faulty magnetron. You can replace the power control switch and the magnetron. Also, check the power control switch, monitor resistor, AC relay, H.V. transformer, H.V. diode, H.V. capacitor and magnetron.
Why is the output power too low in my LG MB-392AA Microwave Oven?
If the output power of your LG Microwave Oven is too low, it might be due to low AC input voltage. Use the microwave oven at adequate line voltage.
What to do if the food temperature is too low in my LG MB-392AA Microwave Oven?
This may not be a defect. If the food temperature is too low in your LG Microwave Oven, it is possible that the food should be cooked for a longer time period.
Why is my LG MB-392AA Microwave Oven sparking?
Sparks may occur in your LG Microwave Oven if you are using metallic ware that touches the oven wall. Avoid using metallic ware unless specifically mentioned in the cooking guide. Also, sparks can occur if you are using ceramic ware trimmed with gold or silver powder. Do not use any cookware with metallic trimming.
What to do if my LG Microwave Oven doesn't start even though the timer is set?
If your LG Microwave Oven doesn't start, even with the timer set, there may be a malfunction in the primary, secondary, or timer switch, or a faulty thermostat. Check the continuity of the primary switch with the door closed, the secondary switch with the secondary switch pushed, and the timer switch contacts. Also, check the continuity of the thermostat.
Why is the output power of my LG MB-392AA Microwave Oven low?
Low output power in your LG Microwave Oven can be due to several reasons: a decrease in power source voltage with load, voltage less than 207V, or a faulty magnetron. Check the power source voltage with load. If the voltage is low, contact your local electric power utility company or a qualified electrician. Also, measure the magnetron’s output.
How to fix uneven cooking in my LG Microwave Oven?
Uneven cooking in your LG Microwave Oven can occur due to inconsistent microwave intensity. To resolve this, wrap the thinner part of the food with aluminum foil. Also, use plastic wrap or a lid while cooking. For soups, cocoa, or milk, stir once or twice during cooking.
What to do if the oven lamp does not turn on in my LG Microwave Oven?
If the oven lamp in your LG Microwave Oven does not turn on when the timer knob is pushed with the door closed, it could be due to several reasons. The fuse may have blown, there may be a malfunction of monitor switch (with door closed) or shorted contact at the primary switch. Replace the fuse, primary, monitor and secondary switches. Replace high voltage capacitor. Check continuity of the primary switch (with door opened). Disconnect one side of the wire lead connected from transformer to the high voltage capacitor and operate the unit. Replace high voltage transformer.
General| Brand | LG |
|---|---|
| Model | MB-392AA |
| Cooking Levels | 5 |
| Color | White |
| Turntable Diameter | 245 mm |
Procedure for measuring microwave energy leakage using water and a meter.
Warning about high voltage components like magnetron, transformer, capacitor.
Steps for installing and adjusting the latch board for proper door function.
Procedure to test the primary interlock switch continuity for safety.
Procedure to test the secondary interlock switch continuity for safety.
Procedure to test the monitor switch continuity for safety.
Resistance test procedure and expected results for the magnetron.
Table detailing common microwave oven problems, their causes, and remedies.
Safety precautions regarding microwave radiation exposure during servicing.
To Next Page
