I do not know what year my TSL combo amp is  but it is an older model. Will the foot switch for new TSL 60 or 100 watt work  with my  JCM2000-60W  TSL 602 combo and if so where can I purchase a circuit board for the foot switch, the channel switches are bad but the reverb and the effect switches seem to be working OK they are turning on the indicator light on the pedal, but will not turn off the reverb and effects. Please help me with this if the circuit board needs replaced