I would like to know the experience of anyone who has used conductive silver
ink for repairing tracks on a PCB.

I have a handy Casio solar calculator. It is quite thin and has a nice big
display. Once it got wet in the rain and after that certain segments are
missing in the digits. An examination of the PCB reveals that the board is a
thin mylar sheet and all the tracks are made of conductive polymer. Some
tracks need to be repaired. I am wondering whether to buy the silver ink
from the market. The 10ml pack costs roughly twice as much as the calculator
itself!

Are there less costly alternatives available for repairing polymer tracks on
a PCB?
Any suggestions please?

Thanks & Regards,
Bala

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