My Comp M2 seems to have given up the ghost after years of loyal service.  Dot won't come on even after replacing with known good batteries.   I have a back up for this reason so swapped if over.  Wondering if it is worth sending it in for repair or if that cost is about the same as something newer and better.  Anyone have any experience with that?

Check with AP CS regarding the S/N, if it was originally a .mil purchase they won't touch it unless shipping to a .mil address.

If all is good, I'd definitely send it for a repair quote personally.