Old Muntz TV for sale Locally to me, Should I pick it up?

[Tube TV]

If if consistantly reading infinity, and 27 ohm between the leads it's fine. And the reading on the LCR meter are in spec. If it was shorted the LCR reading would be way off . So I'd say that you've ruled it out as a potential problem.

[Kevin Kuehn]

Originally Posted by Tube TV

If if consistantly reading infinity, and 27 ohm between the leads it's fine. And the reading on the LCR meter are in spec. If it was shorted the LCR reading would be way off . So I'd say that you've ruled it out as a potential problem.

A quick way to find out would be to resolder the input lead, but leave the output lead disconnected.

[vortalexfan]

Originally Posted by Kevin Kuehn

A quick way to find out would be to resolder the input lead, but leave the output lead disconnected.

which one is the input lead and which one is the output lead?
I'm assuming the input lead is the one that's connected to the white wire that was coming off pin 2 of the 5U4 tube socket?

[Tube TV]

Originally Posted by vortalexfan

which one is the input lead and which one is the output lead?
I'm assuming the input lead is the one that's connected to the white wire that was coming off pin 2 of the 5U4 tube socket?

It will be the one that is connected to the filter cap + lead that is connected to the 5U4.

Edit: yes pin 2

[vortalexfan]

Originally Posted by Tube TV

It will be the one that is connected to the filter cap + lead that is connected to the 5U4.

Edit: yes pin 2

OK so I tried what you said and also swapped out the rectifier tube with a NOS one and the tube didn't arc, so I tried hooking up the second lead and turned on, and the tv the tube still didn't arc but something smoked on the bottom of the TV right around one of the IF cans but what's weird is that none of the parts where it looked like the smoke was coming from looked toasty (unless the IF can itself was cooked), so going by that information it does seem that the Filter Choke is bad.

[Kevin Kuehn]

Originally Posted by vortalexfan

so going by that information it does seem that the Filter Choke is bad.

Not necessarily, a short to ground in the choke would not cause a component down stream from it to smoke. You could have a paper power supply bypass cap that's leaky or shorted, which generally will smoke a resistor feeding voltage to that circuit. In some cases it could be a coil. Can you post a picture showing the area the smoke came from?

[vortalexfan]

Originally Posted by Kevin Kuehn

Not necessarily, a short to ground in the choke would not cause a component down stream from it to smoke. You could have a paper power supply bypass cap that's leaky or shorted, which generally will smoke a resistor feeding voltage to that circuit. In some cases it could be a coil. Can you post a picture showing the area the smoke came from?

See Picture below for where the magic smoke came from.

[Kevin Kuehn]

Originally Posted by vortalexfan

I'm assuming the input lead is the one that's connected to the white wire that was coming off pin 2 of the 5U4 tube socket?

Yes the white wire that should now be connected to the plus side of C1A.

[Electronic M]

Originally Posted by vortalexfan

which one is the input lead and which one is the output lead?
I'm assuming the input lead is the one that's connected to the white wire that was coming off pin 2 of the 5U4 tube socket?

Chokes are non-polarized and there is no such thing as connecting it backwards.

Only tubes, diodes, transistors, and electrolytic capacitors are polarized.