Start button not starting. when you tourch its not responding , what is the problem

mother board.

Try pressing and adjusting the power level before setting the cook time, or maybe before pressing start. Worked on my Panasonic

Possible that the pad is not working or a possible failure.

Remove cover after disconnecting , check for dirt/moisture in the cabin, if so wipe clean and dry, check the magnetron and area clean and use an jet air to clean off.
Make sure that the program controller is working if not check power - step down supply, the pads are responding- if not faulty pads- or the door switches, if contact is not through the microwave will not work.
If only the start button is inactive but you are able to set timing then then the start button pad must be worn out.

poosible burned contacts on cook relay mounted on circuit board; or, a defective solder connection(s) on same board. another spot to check in the door microswitches.

You have a bad control panel contact LG for a new panel.

Good day Sir, here's troubleshooting tips.

Problem: Oven will not start
possible causes: power surge/plug not fully inserted/door not securely closed/start pad not pressed.

MY KIDS WERE USING THE SHARP MICROWAVE R-9H94B FOR A TIMER WITH NO FOOD IN IT. IT NOW DOES NOT WORK AT ALL. IS THERE A FUSE OR A QUICK FIX TO THIS?

Very common , You need to replace the switch membrain , this is the entire touch pad , they are not to much $ , and you should find it easy online.
Phil

This is a UK model? Try this:

http://www.samsung.com/uk/info/contactus.html

Otherwise please reply back and let us know what country you're in.

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