I recently got a really nice pair of L-5's except that one of the 708G's may be a goner - the meter shows it to be an open circuit. I have removed the dust cap and carefully scraped a bit of the coating off the leads going down the side of the voice coil former to the actual voice coil winding (see bad photo). From the scraped point out to the wire terminals measures a solid connection, so the problem must be somewhere in the voice coil winding. When I expose as much of the winding as possible by pressing up from the underside of the cone, I don't see any sign of breakage or damage.
I've read on this forum that reconing kits don't exist, so I'm hoping someone has some tricks for further investigation or repair of the existing one. I've got nothing to lose by trying!