I have a Daewoo MT1510.... At somepoint the light went out but the microwave will still warm upto atleast 1min & 47 seconds and anything longer it literally shuts down. About a month before it started doing that the microwave feel from the wall..... it is an over the stove unit. The unit was screwes back into the wall (cabinetry) and it is ok ....I need a local professional i 60544.