with detailed DIY instructions on a fix. You might be able to remove the unit and use an ohm meter to see if the switch is acting up first. If you decide to fix, these are your instructions. If you decide to replace, most of this site cantains the removal/install info except the following: the new unit has one more electrical connection than older units. Not a problem because the wire is there. All connectors are keyed and of different sizes so a mistake is not posssible-O' those thoughful FROG engineers!

http://www.grill.org/rodney/mclass/mlswitch/