Keeps running while cleaning the touch pad the turn table just started turning, and will only stop when the door is open.....when you close the door the microwave comes on, but does not heat any suggestions? unit is 10 years old, 950 watt. white....mounted over the stove

The door interlock switches require replacement.

The switch assembly is somehow staying "closed" satisfying the interlock and enabling it to run.
Disassemble the unit, beware specially of the high voltage capacitor, if you aren't comfortable or competent, buy a new microwave. If you are mechanically inclined, disassemble the unit until the switch assembly is accessible; it will have the door latch attached to it.
The switch is either broken or something? exogenous is keeping it closed. It may have come loose due to the door slamming?.
It's a simple fix. I am certainl you will be successful.

check the door lever

The door switch is adjustable. one or more need adjusting to solve the problem

This is an inverter model so there is no diode or hv capacitor.
You must adt. the door latch switch assembly to make sure that the door hooks make contact with the switches. Common problem is that the assembly is bent and must be perpendicular to the door.If it is bent the switch will not make contact with the door hooks.
Place a dab of lithium grease on the tip of the door hooks to ease closing the door. This is the cause of the bent switch assembly!

This is due to fault in the touch pad or the front control unit. There is dirt or moisture which triggers the start to function on the processor board. You need to remove the front panel and remove the touch pad /controls, try and dry using a dryer to warm. If there is no result the pads must be replaced. Also check for clogging of insects within the board which can trigger the start function or malfunction. remove and clean the board.

It is one of two things, a defective door switch, or the keypad control board has failed.

HELLO.

Solution to your microwave problem is given as below.

* 1 Set your Daewoo microwave on a countertop near an electrical outlet and plug it in. Open the door and place the circular roller guide in the center of the oven cavity, then place the glass cooking tray over it.

* 2 Set your food on a microwave-safe dish and then put the dish on the cooking tray and close the door. Make sure that it latches properly.

* 3 Turn the upper knob to select a power level. Power levels include "Defrost," "Med-High," or "High." If your Daewoo has a touch pad, touch the "Microwave" button once to set the highest power level. Touch it consecutive times to lower the power level.

* 4 Turn the lower knob to set the cooking time. For cooking times less than two minutes, turn the knob up past the two-minute mark, then back to the correct time. For touch pad models, enter in the cooking time with the numerical keys and then press "Start."

* 5 Open the door at any time to stop the cooking and check the temperature of your food. Shut the door to automatically continue cooking, or turn the timer knob to the right to add more time. For touch pads, press the "Stop/Clear" button, then key in a new cooking time and press "Start."

* 6 Open the door when the timer reaches the "Off" position and take out your food.

Thanks.

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 the switch contact are not good then it will not trigger the processor to switch on the waveguides.Since the table turns without a program start and If the lights or fan work without any display or action of program being triggered to start then it can be a possible fault on the main board or the processor. Sometimes insect secretion can short the board and display panel and so the processor can work in such an erratic manner. If so clean,solder and reset the board.

Thank you using Fixya

Sounds like a door switch problem or stuck relay contacts on the control PCB. Do the light and fan run too or just the T/T??