Problem description: Lights and two outlets in our home office are not working. 1950's era home, mostly original wiring in the walls. I think it is a fabric outer layer, surrounding single black and single white wire. No ground wire.
Noticed a few times over a week or so that the light would flicker and go out, then come back a few minutes later. Eventually it went out completely and stayed off. Every once in a while if you flipped on the switch it would light up for a second and then go off and stay off.
Has not tripped the breaker ever in this couple week process. Breaker box is very poorly labeled, not certain which breaker this circuit is specifically tied to, but narrowed it down to most likely 2-3 that seem to cover the nearby bedroom, etc.
What I have already covered:
Took out all the outlets, switches, light fixture etc, to check those. Replaced the outlets and switches since I had them out anyway, and they are less than a dollar apiece. (Figured it couldn't hurt to upgrade them, and one outlet had cracked plastic on the face anyway.) No obvious problems, and no obviously loose connections.
Wiring somehow goes from the breaker box outside the back door through the walls. No idea how the wires run to that point, but must go around a small bathroom between the breaker box and the room somehow. Comes into circuit at light switch first, then runs to outlet 1 and ends at outlet 2. Multimeter says no voltage at all at the light switch box at this point, outlets downstream obviously 0 volts also. (Lightswitch box has incoming wire joined to ougoing toward box, short jumper to switch itself and outgoing to light fixture.) Wiring gets to lightswitch box without going up into attic, or down to basement in any obvious way--have clear views in both and no wiring to be found going to this area. Little stumped on route, only guess is straight through studs in wall all the way, but confused how they deal with doorways, etc.
Breakers that I think it could be on all read 120 volts from neutral bar to the screw on each breaker.(Assuming that this means the breakers are still good, haven't ever really done much inside a box before beyond flipping a tripped breaker back on.) Everything else in the house is working fine--every single outlet and light. (850 sq ft house upstairs, with mostly unfinished basement down--checked all outlets and lights work in 10-15 minutes.)
My limited experience is now making me think that I have lost connection through a wire in the wall somewhere. Or lost a connection at a junction somewhere else along the line that I don't know exists, or istrangely set up on the same circuit. Is it possible that wire comes out of the breaker box, then splits in the wall to two seperate circuits? I would have lost one leg of the split in this case? Any other bright ideas before I break down and have an electrician come look at my problem?