swapped out the joystick controls?
just FYI, anytime any controls are disconnected from the system it is required to recalibrate them when reconnected.
just swapping out a joystick control will not fix the problem, even the new/different one will still need to be calibrated.

swapping out the control box? well it may fix the no voltage problem but i still believe you will suffer the same problem with calibration, if you don't I'll be surprised.
Also the code will have to be cleared from the controller, is most likely the reason you have no voltage coming from the control box, if the code shuts the control off then you wont have any voltage coming from there until the problem is resolved and the code cleared from the ecm.

default password changed?
you wont get in there then, the password was probably changed by the dealer so you will need them to come out and access the system and re-calibrate it and clear the codes.
I'm pretty sure they will not give you the password, hence the whole reason behind changing it, to keep it from getting out and letting any joe smoe tinker around in there.
(a semi-effective tactic that has been in practice by Raymond techs for years unfortunately)

good luck