Hi,
Greetings from Brazil!

I think there is a leakage somewhere. You have 2Megs but no connection
to a ground, so you should have the same 180Volts on J1001. You are
missing 120V!! I don't think C1002 is the problem since you have -1.2V
on pin2 of 12AX7. J1001 is a suspect, the TV is very old. Either the
connector may be conducting or the wires that go to the mic.