JCB 8060 hydraulics disabled

I was digging away yesterday on a JCB 8060 tracked digger and the next thing the hydraulics disabled as if i had lifted up the left hand arm rest/control console.
Turned it off and back on and no change. So i then checked the fuses and there all fine. I lastly assumed that it must be the switch itself so i stripped out the console to get at the switch and the switch seems to be fine, i tested the wires to make sure there was 12V getting to the switch, i crossed the wires to bypass the switch and i measured the resistance on the switch when the switch is on and when it isn't and the resistance changed to 0 when the switch was engaged. So all of that the issue is still there. Has anybody any ideas where to go next? I imagine that switch is connected to a solenoid that activates the hydraulics but i'm not sure where to look for this, will i have to take the cab off?

Really appreciate any help or suggestions!!!!