Agree with gm, pop it open and lets have a look see eh?.........Collectively, we have managed to fix a few thing around here, even remotely if you're game
Could spray a wee bit of electrical contact clean from the outside down in the sector switch and index the selector switch it back and forth through its setting ranges first, see what that does.
If no luck, looks like the front bezel ring is machine pressed around the back body cup........How are your dremel skills? Get a cutting wheel and carefully go around the metal face ring cutting the ring in half so it splits in two and the face pops off. Guts (meter movement/PCB) will most likely stay attached to the face piece as the works slide out of the body cup.......Spin the terminal post nuts off first though.
Once fixed, tack the front ring back on such that its hard to tell it was opened........Super glue or such. I use Tak Pak, good stuff!!
