Hi all, I have a Dell Latitude XP (486) and an XPi CD (Pentium 1) laptop, they both seem to have the same issue with the keyboards where some keys work and some don't. Testing with a multimeter I can see that some of the connections on the flat flex cable have gone bad. If this was copper clad flat flex it might be possible to seperate the plastic layers and use solder bridges to repair the wires. These keyboards have black conductors, possibly graphite, I'm not sure.

Is there a solution to repairing these conductors so the keyboards can work again?

I would be tempted to source a replacement keybaord for them, but seeing as both laptops I have from that line have the same problem I would imagine that a 20 odd year old replacement part would either have the same issue or it would develop the issue over time.