I lost power to a circuit when a family member turned on the TV. I
was vacuuming in the other end of the house, but on a different
circuit (and subsequently it did not affect my vacuuming). Family
member said the TV shut off by itself and won't turn back on. All
outlets in the circuit are dead.

I flipped all the breakers and checked all the fuses to no avail.
Assuming my breaker is OK (perhaps a bad assumption), I'm going to
start looking for an open in one of the outlets.

The odd thing that is bugging me is coincidentally I was working on a
different circuit the night before replacing some light fixtures/
switches. I'm figuring this is a coincidence, but I'm suspicious. I
replaced a couple light fixtures, two switches and removed a 3-way
circuit and replaced with a 2-way switch. Everything went smoothly
and functioned (and continues to function normally). While I was
doing this, the circuit that "failed" this morning was working (i.e.
TV and lights were on -- I was working at night, wife was watching
TV).

I don't see how anything I could have done on one circuit would affect
the other. I even watched TV when I was done. No problems. But it
is odd timing.

Am I on the right track?