That would be terrific if you can help Raymo.
The wires that have come off appear to have come from a line of 5 pads running between the 12V input socket and the hand controller socket. There is a white wire still attached at the 1st of the 5 soldering pads, right next to the J2 marking on the PCB.
Looking at the the solder pads with a magnifying glass shows that the wires have not broken, but were just barely soldered on. Very poor construction Mr. Skywatcher!
Cheers,
Robert