Pilot TV-37 Restoration

[Popester]

Interesting way that you tune the channels. Much like a radio. Obviously there was no detent for the channels. Would this be a split sound design for the sound and video IF?

[Crist Rigott]

It is a 1949 TV-37U model.

When I got my electrolytic caps I picked up some TVS diodes too.

I don't think it is a split design. The sound pickoff comes at the Video amp tube. I forget what the proper name of that design is. Intercarrier?

[Crist Rigott]

I started on replacing the electrolytic caps tonight.

I decided not to re-stuff C1 and C3. Because it was easy to add a terminal strip for C1 and C3 was just wired in directly.

C1 is a double cap that has a 100uf and a 40uf cap both at 150 volts. I used a 100uf and a 47uf both at 250 volts and 10,000 hour 105C caps. I used a terminal strip to mount these.

C3 is a single 40uf 150 volt cap. I used a 47uf 250 volt cap like the one above.

I replace a 2 position terminal strip with a 3 position terminal strip and used that to mount C6. It was a 5uf 50 volt cap and was replaced with a 5.6uf 250 volt cap . The reason I used a 250 volt cap was that the 250 volt cap is more robust and less chance of getting damaged.

I cleaned, lubed, and polished R2 the Brightness pot.

[Jeffhs]

Originally Posted by Popester

Interesting way that you tune the channels. Much like a radio. Obviously there was no detent for the channels. Would this be a split sound design for the sound and video IF?

DuMont made a console TV in the early 1950s with the same type of tuner this set has. These tuners would receive all 13 VHF TV channels at the time (including now obsolete channel 1), and also the FM broadcast band between channels 6 and 7.

[JohnCT]

Originally Posted by Jeffhs

DuMont made a console TV in the early 1950s with the same type of tuner this set has. These tuners would receive all 13 VHF TV channels at the time (including now obsolete channel 1), and also the FM broadcast band between channels 6 and 7.

Maybe a Mallory Inductuner? My Andrea has one and it works perfectly with zero attention paid to it.

John