Admiral P17E31 scored

[Reece]

I think I see a few large pin tubes in there. Is that a brass base short pin globe style oldie over at the left? That may be from the very early twenties. Even if a dud it's of interest to collectors.

That TV has a live chassis. How do they have that isolated from the metal cabinet?

[bandersen]

The large tubes are ham type tubes like 836 and 866. Yes, it's a brass based 01A. The filament is ok but the grid leak is broken inside.

One side of the AC goes right to the chassis ground. The cabinet ground is connected to that via a 1 M resistor and a 0.0047 1.5 kV capacitor. I assume to bleed away any charge that might accumulate.

[bandersen]

The flyback is Admiral# 79D 77-4. That's a FLY-137 I believe.

[dieseljeep]

Originally Posted by Eric H

The chassis on these portables usually unbolt then tip and remove out the back, unplugging the anode can be a challenge sometimes.

I never pay attention to the life test, if the tube goes up to good with little warm up then it's fine.

The Fly looks a little worrisome though, shouldn't be too hard to find one though.

Remove the front safety glass bezel and the screws from the cabinet wrap-around on the bottom. The CRT and the chassis are all in one mounted on a frame.