Old photos of TV's

[kvflyer]

I have this TV now. It is exactly the same model that I had as a teenager. I bought it in working condition. It is unrestored so it should be somewhat easy to make it good. Oh yeah, I actually have an NOS 16TP4 CRT for it. That is the icing on the cake...

[wa2ise]

Originally Posted by kvflyer

I have this TV now. It is exactly the same model that I had as a teenager. I bought it in working condition. It is unrestored so it should be somewhat easy to make it good.

Looks like a later version of mine:

and the diagram of mine:
http://www.wa2ise.com/radios/adm.gif

And I had a copy of this TV when I was a teenager, as well. Used to be my father's mother's TV she had in her apartment in NYC, back in the 50's. We inherited it when she checked out in 1960, and my father tossed it in the mid 70's. Got another one off the bay a few years ago. The door on hers fell off, and never had it for the one I have now.

Replacing all the wax caps should be all you'll need to do. Assuming the circuits in yours and mine are similar, be sure to use a temperature stable cap in the horiz oscillator, the 0.01 cap, parallel with a 22K resistor, mounted across the horiz phase coil, between the 6SN7 and the 6BQ6 Horiz output. Actually, as it has a 22K resistor in parallel, you probably could get away with just leaving it in (the 22K resistor should swamp any cap leakages). I first used a ceramic cap in my TV there, but the horiz hold was too drifty. Then used a orange drop type, and that fixed that.

[jeyurkon]

Congratulations! My interest in old TV's and radio's centers on the ones we had when I was a kid, so I understand how you feel. It looks like it's in great shape.

wa2ise, I see that yours uses a 16CP4. What's the difference between it and the 16TP4? I couldn't find any data on the 16CP4.

John

[wa2ise]

Originally Posted by jeyurkon

wa2ise, I see that yours uses a 16CP4. What's the difference between it and the 16TP4? I couldn't find any data on the 16CP4.

John

You mean 14CP4, yes? It uses an ion trap, and of course it's a smaller CRT.

[jeyurkon]

Originally Posted by wa2ise

You mean 14CP4, yes? It uses an ion trap, and of course it's a smaller CRT.

Oops! Well, that explains why I had trouble finding data on it.

John

[kvflyer]

Originally Posted by wa2ise

Looks like a later version of mine:

and the diagram of mine:
http://www.geocities.com/wa2ise/radios/adm.gif

And I had a copy of this TV when I was a teenager, as well...

Yes,

I think that both of these sets were out at the same time. 14" and 16". Kinda neat...

[kvflyer]

Originally Posted by wa2ise

...Assuming the circuits in yours and mine are similar, be sure to use a temperature stable cap in the horiz oscillator, the 0.01 cap, parallel with a 22K resistor, mounted across the horiz phase coil, between the 6SN7 and the 6BQ6 Horiz output. Actually, as it has a 22K resistor in parallel, you probably could get away with just leaving it in (the 22K resistor should swamp any cap leakages). I first used a ceramic cap in my TV there, but the horiz hold was too drifty. Then used a orange drop type, and that fixed that.

Thanks for the heads up. I truly have an advantage because the set actually works and it has not been restored. It will be the next item on the bench. I should document a step by step restoration. Surely some of us could benefit from it...