So, last night all going well - pulled apart the camera and got the lens off. Raced home tonight to begin testing only to find a USB error - device not recognised.
There's 5 cables - one bare wire with aluminium shielding (see attached photo).
On closer exam it looks like thin black wire and thicker black wire have come off soldered points. Do these just go back in order? So, working from inside - pink, green, white, thin black, thick black?