Started a load on delicate cycle last night and came back later to find a burnt smell and water still in the tub. I started playing with it to see what the problem was and I could get it to agitate in the regular cycle but all it would do in the delicate cycle was motor hum. I have read where the motor is a 2 speed motor and I am guessing that the low speed is for delicate cycle. Any ideas on what it could be?