I have a 20+ year old Fluke 87 with the very common problem of faded/missing segments in the display. I've had it apart several times, cleaned up the PCB contacts and the elastomer connector strips and treated them with Stabilant-22. Each time upon re-assembly it looks as if things are now perfect again, but within a very short time it's back to where it was, or worse.
I'm guessing that the elastomer strips have simply taken a "set" over the course of two decades and need to be replaced. Does anyone know if these are available from Fluke or an aftermarket source? Thanks for your help!