My turntable has stopped spinning when i press start. when i stop it it spins back for a sec then nothing.when i take the plate off the turntable the bit that would spin seams like it can't move free is the motor broken or the brake stuck on ? i don't have a clue but i want it up and running again and i don't know who to see about it

I also have 1 of that , I set the timer in 2 sec [start] when that happens to finish its time setting. The cause of that someone press the [Cancelled] while its on progress.

indications are a failing throw out bearing for the clutch or clutch plate getting worn out AS the clutch plate lining wears , the pressure plate fingers come back closer to the throw out bearing causing it to spin
if you can make an adjustment on the slave cylinder push rod or clutch cable to give the bearing a nit more clearance the noise may not be there as it will not be spinning from the pressure plate fingers

Check three door sensors, especially for two closed state switches.

Switch/trigger problem.

Have you checked the belt that makes the plates move?

Sounds like the turntable motor has stopped working.

Replacing the turntable motor.

The motor assembly is fixed to the base of the oven usually with two screws and access i obtained by removing the inspection plate directly beneath the motor. It is usally a plug in synchronus motor that revolves at a few revs per minute but the plastic cogs in the motors gear box fail and the motor assembly must be replaced. They are fairly inexpensive and obtainable usually from a domestic appliance repair shop.
If you feel confident, disconnect it from the mains power, remove anything in the cavity and turn it upside down if it is a tabletop model, a little more complicated if it is built in!
Remove the inspection plate and disconnect the motor. Remove the motor and go and get a new one. Re fit it and put the microwave back in its position. Plug it back in, with the turntable and plate. Put a cup of water on the plate inside of the oven and heat for 20 seconds to check the plate goes round.
Hope this helps.

Turntable motor must be replaced.

One suggestion i would make is that in the microwave there is the turntable, lift the plate off ,then below it you will see a circular object with wheels on.I think you may have this the wrong way up, so turn it over put the plate back on top and should work.

its the circular piece on runners that is the problem

take the turntable arm by your hand and place it above the record,then use the up and down lever to lower arm on record!!

Your test mode is on, maybe accidently. Press "start", "cancel", "on" & "off" together for 10 secs, you will see d/off come on the display. Do the same & the test mode comes on again.

Rate pl.