20 Most Recent LG LMV1630ST Microwave Oven Questions & Answers

If the microwave buttons don't work the touchpad and control panel assembly are probably defective.

The problem is in the keypad control board and must be replaced, I would consider cost before you allow the go ahead.

replace transformer on pc board

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https://youtu.be/fUIQ0u01SyY

It sounds as if the display board is faulty.

Be very careful around microwaves they have very high voltage inside them that can be deadly. As for the control panel its very common for grease and oil to get behind the plastic film of the control panel, once it does the buttons will stop working since the grease insulates the contacts. Unplug it from the power, let it sit for 60 minutes to make sure all power from the high voltage caps has dissipated. Get access to the back of the control panel. You will probably have to peel back the control plastic on the front to get behind it. One behind clean all the buttons and contact areas. Reassemble, and it should work.

The door comes in parts not the whole door. All you have to do is remove the plastic liner around the glass and you can get to the screws that hold the door in place. Go to sears web site and you can order the parts thru them they are pretty good about getting the parts for you

disconnect from power,then remove the cover and test the fuse and the grounding diode for failure then replace but if still not heating then replace the magnetron.

Change Bridge Rectifier Diode And Capacitor Without Test by Meter,Some Time it will licks,Check All Connected Parts,And Last Is Transformer