BMC 20 with max 3 control.

The hand held remote jog pendant has been wonky for a while now but it's just started to get worse. When I switch the machine on the remote jog unit very often doesn't work, none of the led lights come on during start up. I can normally get the machine going by switching it on and off a few times and then leaving it on once it's all working properly. Obviously I need the remote jog for setting a new job up, without it the machine is pretty much useless. I try to leave the machine on these days but now it's started losing the remote after it's been on for a few days. I've just gone to it today to set up the next job for next week, powered up the servos and can't move the table because the remote unit is dead, very frustrating.

Anybody got any ideas please.