My microwave white westinghouse keyboard, model KM90VP-63/03, suddenly, inscribes numbers other than those I dial, even does not maintain a chronological order when those numbers are decreasing. I tried unplugging it for a while, but it's still the same. Thank you! Underworld

Hello greetings that fault the cause the touch menbrana should replace it to be able to solve the fault in case you don't get it, place pushbuttons it is a bit more work but it is lasting and guaranteed greetings. Atte Hector of Venezuela

that fault is caused by the mic, because in fact in a 555 that without the need to create a system like the microwave card can do that countdown if it jumps are voltage problems at the output of the mic there is variation check the mic, I say it because it is very peaceful to a circuit that I have to activate a water pump that fills the tank in a decreasing way, and I present that fault that you write very similarly, of course the quartz crystals that have been damaged, even though those are LEDs that you see in dysplay, but check the micro suddenly is a deprogramming that has the same as it happened to me thank you and happy afternoon

Does anyone know how to activate the grill in these microwaves?