Frigidaire Dryer FSE447GHS0 won't count down

[FreddyK]

This started over the last few weeks, I originally thought it was maybe the sensor.  There are two cycles on the dryer, one that is suppose to measure the humidity in the dryer and stop when done "I'll call it Auto", and a timed cycle.  As of the last few weeks, I had to switch from the "Auto" to the timed, thinking it would be easy enough to say 60 minutes because it went all night.  and I don't know if this was working and then stopped or if it was simply coincidence, but as of now, I'll set it for 60, 70, 80 minutes, and an hour later, the dial hasn't budged and it will go all night if left to it.

 

Not sure where to start on this one.

Thanks in advance.

[FreddyK]

Nothing?

[16345Ed]

Sounds like timer motor quit. 

Part number: 131905500