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.
see the next steps , use the VOM for fix it. God bless youIf your microwave is turning itself on, the first thing to
check is the interlock switch. This is usually the first thing to
malfunction that could cause this issue. If the interlock switch is bad
then it will need to be replaced.
Main control boardIf
your microwave is turning itself on and the interlock switch is still
working, the probable cause is the main control board. If the control
board is defective it will need to be replaced.
follow this steps and use the VOM for fix it. God bless youIf your microwave is turning itself on, the first thing to
check is the interlock switch. This is usually the first thing to
malfunction that could cause this issue. If the interlock switch is bad
then it will need to be replaced.
Main control boardIf
your microwave is turning itself on and the interlock switch is still
working, the probable cause is the main control board. If the control
board is defective it will need to be replaced.
A suggestion---call or contact LG to see if what you want is even available---only other (a little crazy) is consider if metal having the handle removed and chromed.
To address the issue you have, "LG" have a separate membrane/touchpad available for purchase as that is the most likley culprit, based on your description.
Posted below is a couple of link's to the part number and illustrations...of many locations you can purchase it from. Part # 350681A006A and retails for under $20US.