After all this time I eventually acquired a known good mirror assembly from Japan. With this connected in has exactly the same problem where one mirror does not stabilise.
I will replace the caps and check connectivity as my next step but my gut is telling me something more serious is wrong with the servo board.
If you do have one for sale by any chance I would appreciate it.
Just to be clear, when you talk about “disconnecting” things, you’re talking about the mirror galvanometers, and not the LED display cables, right? The two systems are independently controlled by the VIP.
Correct I am referring to the connectors going to the smaller board in the nose of the VB not the ribbons going to the displays.
I will open it up and give it another clean, and recap the board they are connected to and let you know how I get on.
If that does not work out and you have a spare board that would be hugely appreciated!
