My help file on door switches is here:
http://www.microwavecontrol.com/doorsw.htm
The service manual is at my site here:
http://www.microwavecontrol.com/lmvm2055_sm.pdf
If you need more free help, free free to contact me directly.
- William E. Miller, AS-EET
[email protected]
http://www.microwavecontrol.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"
SOURCE: No key's work. Display and inside light is working
The Keypad is either faulty, or disconnected. Open the case, and remove the screws, holding the outer shell on. Inside, there should be a small board that covers the Keypad. Check to see if there is a ribbon cable, or some other type of connection going from the board to another part of the microwave. If all of the wires are connected, then you will probably need to replace the keypad.
SOURCE: Microwave Does Not Heat.
Test the high voltage capacitor,the rectifier diode.or the magnetron.
If it additionally does not spin and no light, then check also the door switch.
The diode and capacitors can br tested. The capacitor must be alloweddischarge before testing, or you risk to get electrocuted, even ifpower is off. Capacitors can get discharged by shorting their twocontacts.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.
All locations, and description of this parts can be located using the diagram here: Counter top.
Parts must be tested to find out what is wrong.
Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.
Regarding parts, contact the seller here to purchase parts. (here in UK).
SOURCE: LG Microwave won't turn off
Our LG did the same thing - called customer service and they told us the open and slam the door 10 times. It actually worked! It reset the switches somehow.
SOURCE: Installation of magnetron
if you push the star button and no sound or anything comes from the unit then you have a bad user control. if you hit start and the machine starts working but not heating then i recommend replacing the magnatron capacitor and diode. use caution replacing these as the unit runs the mag with a 20,000 volt transformer
Testimonial: "WOW!! I can't believe someone answered so quickly. OK, can I replace the user control myself? If so, how. OMG you are awesome, thanks so much."
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