kjj4t9rdad on 18 April 2009
It is probably a bad sensor under the pad. These are easy to get to, just pull the drum head off and turn it over. I think 2 screws hold the sensor on. I'm not sure where you can find a new sensor, but you should be able to swap them out pretty easily. I would try Radio Shack if you live near one.
Hope this helps.
