My lg microwave lcrt2010st will not unlock

If the display comes and goes the only fix is to replace the complete control panel, a very expensive part.

I just successfully replaced a Thermadore MBBS microwave with an LG Model #LMC2075ST (Lowes stock number 728040). It was close to a perfect fit into the Thermadore trim kit and attachments, and very easy install. The LG was only $169 on sale at Lowes, and is, by far, a superior microwave to the old MBBS model.

Obviously someone has worked on this unit and wired the wrong wires to the door microswitch

switch is faulty at inside could be burnt

very very unsafe

replace fuse inside with 10amp

PCB

Often that is due to accumulated grease on the door open button and the opening in the plastic control panel frame in which it moves.

See these links before proceeding:
http://031d26d.namesecurehost.com/mwd/safety.txt
http://031d26d.namesecurehost.com/mwd/disassembly.txt

You can find links to helpful exploded view diagrams and part ordering help for most brands here.

I recommend that you bookmark that link to your favorites.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

THE HIGH VOLTAGE FUSE IS IN A PLASTIC EXTRUSION NEXT TO THE CAPACITOR AND DIODE.
YOU CAN USE 3 OR 4 STRANDS OF THIN WIRE FROM MULTI STRAND 15A MAINS CABLE. SOLDER IT OVER THE BLOWN FUSE. I HAVE DONE THIS 100'S OF TIMES.