Here is the service manual which will take you through trouble shooting and diagnostic routines.
http://frigidaireservicetips.com/pdf...sherManual.pdf
I am afraid at the end of the day you will be talking about a new control board, but this model also has a motor control board which fails frquently so you want to narrow things down.
Hopefully it is none of these and the trouble shooting will show you a way to reset it and have it working again.
Good luck.