My guess is that the scope can be repaired. I know they (the folks at Trijicon) can replace the Tritium after it originally goes out. I think they say that typically occurs in 10-12 years (if I remember correctly). I seem to remember the cost being in the $200 range...much cheaper than buying a new scope. I'd give the Trijicon folks a call though.

Regarding the mounts I'd replace them. Why take the chance? There are many good choices to utilize.

Good luck and please post any info (regarding the Trijicon stuff) you uncover.