My Brada microwave oven shuts off after about 5 minutes of cooking. Sometimes less than 5 minutes. When the unit shut down, I checked and found that there was still power supplied to the wall outlet, (ruling out a faulty power supply or tripped household breaker) . The unit will restore its power after about 10 minutes at which time we reset the clock and push start to continue cooking for another 5 minutes until the same thing happens.