Crockpot won't heat anymore, is it usually the heating band?

i had a cuisinart slow cooker do this and the issue was the temperature control board not the band. The newer slow cookers with electronic settings have more points of failure than the older machines with knobs to control temperature.

interesting, how come they use relays instead of triacs to switch the band on and off with the electronic controls?
 
interesting, how come they use relays instead of triacs to switch the band on and off with the electronic controls?

actually that raises an interesting question about the use of triacs in these slow cookers. When a triac fails shorted to ground, it will cause the band to continuously run in high mode regardless of the setting selected which would be the cause of a few house fires in operation.