TIGER SHARK WIRING PROBLEM

[lucafa]

Greetings.
I have a Tiger Shark metal detector belonging to a friend with a problem connecting the main PCB to the control PCB. The connecting wires between the two PCBs—16 multicolored wires—were ripped apart during a battery change due to an unfortunate accident. Is there anyone who can provide me with guidance, including a photo, on how to connect these wires correctly? If possible, I would also appreciate a schematic to check that everything works.
Thank you in advance for your cooperation.

[ivconic]

Copper braid for cleaning tin and remove the extra tin.
Looks like somebody tried to reverese ee on this?
Is that Microchip PIC or what?
Maybe "burned" ?

[kt315]

thinking the micro had been died. catastrophic case.

[Altra]

It looks like some water mist or a wet finger touched that area. Now the tin and copper are reacting causing the corrosion. Soak the pcb in alcohol and scub gently with a soft toothbrush. Repeat until clean. This is common problem with water detectors.

Hopefully the pic chip will still function, otherwise as kit315 said "catastrophic "