MY MICROWAVE IS NOT HEATING , EVERYTHING APPEARS TO BE WORKING FINE? WHAT COULD IT BE? IT IS A DAWOOD KOR-1B4H

Maybe time for a new one. But just in case check the power outlet still has power and the circuit breaker is not tripped.

Chances are you have a bad door switch or the switch's mount is loose, misaligned, or broken.

See my help file here.

You should never run a microwave with nothing in it!! There is nowhere for the energy to go. The oven itself has a special coating that keeps the sparks from happening. Anywhere the coating is bad will arc. If it keeps arcing it will burn out the microwave generator.

It can be fixed but it will be expensive, from the description the problem is in the keypad control board or smart board.

mcdevito75 here, Contact Daewoo online or by phone thru your Owner manual.

which fuse has blown, was it in the plug or in the microwave itself?

may find it here
http://www.daewooelectronics.co.uk

It probably is, but I cannot find your model number on the Daewoo website to look in the manual.

Please confirm and reply the model number .

You can visit Daewoo online or call them at 1-800-323-9668 or 1-800-553-4355 to find parts.

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

the only way on these is to take the case off
WARNING : DO NOT ATTEMPT TO GO INSIDE IF YOU DO NOT KNOW HOW THE HIGH VOLTAGE WORKS OR THE COMPONENTS THAT HOLD HIGH VOLTAGE!!!
and never go inside with it plugged in!