Hope there is a video or two on this scope. Love seeing how HP did their magic particularly in the older designs.
Well I have shot 40min worth of repair footage. Whether or not I release that depends on whether I get ti fixed or not :->
Already fixed an ADC channel fault on it, but the keyboard one remains. Needs a bit more effort.
Resoldering the encoders and connectors didn't help, but I didn't expect them too, as an open or shorted encoder should just affect that one encoder, not others, they are only soldered on a single side of the board, not being used as vias even.
In any case I've measured the encoder contacts and they all seem to be doing their business.