hello,
i have a kasparov electronic pocket chess games with a coach function.
i bought it second hand and want to keep it as most of it works except two buttons.
i took the thing apart and found that there is a sort of mesh made of plastic. when you press the rubber button it presses the top mesh against the bottom and makes a circuit. i noticed that the trace from the two buttons to the chip is damaged. it is a silver colour, not sure what it is exactly. i tried putting some tin foil on it but that doesnt work. is there some way to connect the trace without solder as the mesh is a thin plastic.

EDIT: i have fixed it so never mind, never underestimate a man armed with cellotape and tin foil. give me moldy orange peel, two nails and a nuclear bomb and ill kill rambo!!!

 

I'd try a pen with conductive ink.
https://www.jameco.com/z/CW100P-Cai...Based-Circuit-Writer-Pen-5-grams_2110529.html

 

Hello,

It could also be that the carbon on the rubber pad is worn out.
This could have damaged the PCB tracks for the contacts.

Bertus