got a PF "power failure" code on our Whirlpool Cabrio dryer the other day. this basically shut the whole thing down. the digital display will register, but the dryer itself will not cycle. did some research and the most likely possibility was a $35 thermistor, which i replaced today. still to no avail. the power cord is a 3 prong, which i checked and is fine. i should also mention that i checked for blockage in the vents and its clear. any advice or opinions is appreciated.