Magtag Dryer won't work

Our Maytag Dryer won’t work. Push the start button & it beeps & flashes a "E5".( The top of the E is cut off). I had a repair man out yesterday & he said the "Thermister" was bad. I picked the part up today & installed it myself, because I’ve already spent $160.00. Still doesn’t work. Went thru the service mode & the motor works or tumbles . Any Ideas ? Model MDE6700AYW