Hi
I have a Zero-88 Jester ML24 lighting controller. It gets used for local charity and non-profit shows.
I suspect there is an internal fault with how the faders are multiplexed. The most obvious fault is that the Grand Master fader will only go to 75%, but operating other faders will make it go to 100% as they get to full travel. In test mode, the flash buttons work correctly, but the associated fader will not be 'read' correctly, however another nearby fader will operate in place of the desired one.
There is a new battery installed, the desk has been reset and the last available firmware and fixture library installed. I've made up and tried a new ribbon cable assembly in case the original was faulty.
Is it possible to get internal schematic diagrams for this desk so I can get busy with a 'scope and meter?
Thank you.
