screw all the circuitry back on, connect the cables to the pins, check once more for the buttons to work , close the back cover and you're ready to r...
if you are having problems switching through presets or banks , this should probably mean that the micro switches have worn out. this instructable will guide you through a few steps on how to change them.
all you need is :
a soldering iron
a few micro switches
a screw driver
Step 1: OPEN THE PROCESOR
just unscrew the back cover and be careful to put the five screws in a safe place