1961 RCA 19" b/w with remote

[dieseljeep]

[QUOTE=OvenMaster;3072862]I grew up with a set just like that one but it didn't have a remote... facing the front, the UHF tuner was on the lower right side where the remote circuitry is located on the OP's set. My guess is that you could have UHF or remote control but not both.

The set uses a Standard Coil tuner with UHF strip capability. The rectangular opening near the bottom of the tuner is where the UHF strip antenna contact assembly mounted.
Very few RCA's used Standard Coil tuners.

[holmesuser01]

You can sure see how they used newer color TV technology in this chassis. The Nuvistor, and the IF section tubes, for two...

I love seeing these old babies being found and restored.

[Adam]

I made some progress with this set. It looks good with a new CRT. Every tube in this set was good, except for the CRT which wouldn't even budge the needle on the tester even at 8v.At first the sound was going in and out, that turned out to just be a gunked up tuner. The remote changes the channel (at close range only), but the remote vol control still doesn't work.

[Adam]

This is an unusual set up for controlling the volume. It's neither set up like the Zenith with it's 3-position relay separate from the volume control, or the other RCAs I've seen with a motor turning the volume control. Here there's a relay that actually physically turns the volume control in small increments. I realigned the remote receiver, and replaced an open resistor, now the volume will go down with the remote, but not up. But it's a mechanical issue, not an electronic one. The relay is actually moving, but the volume control is not.

[Adam]

I fixed the remote problem. Looking at the first picture, it works by turning that gear attached to the vol control. There's one relay on each side which each rotates an L-shaped piece of metal, one turns the gear one way the other one the other. Someone had sabotaged the mechanism by slipping one of those clip-on nuts in there keeping one of those L-shaped pieces from turning all the way and making contact with the gear. (I tried to show it in the 2nd pic, but you can't really see it) But I guess someone wanted the remote to only be able to turn the sound down?

[Adam]

I had one more unusual problem with this tv. When you turn the channel, not when you go to a channel with no signal on it, but when you get first back to a channel with something on it, the picture would dim and then slowly come back up to full brightness in about 30 seconds. There was no problem with the brightness under any other circumstances.

I circled in the picture a resistor that was open, and causing the problem. I'm not sure how it was happening, as that resistor being open didn't cause any problems when I wasn't changing the channel. And it looks like all that is going through that circuit there is vertical blanking pulses. Something to do with that .0047 cap in parallel with it getting charged up when the vertical frequency changes, and then not being able to discharge through that resistor?

[Adam]

This set is done...

Next I finally scored that new 17DQP4 for my 1960 Zenith that I've been looking for. Otherwise, the only set I still have that needs work is my Zenith porthole console, but that needs cabinet repair in addition to the sound problems it has, and I don't think I'm going to deal with it this summer.

That's 19/20 sets working. The last time I had only one tv that didn't work, it was back in the summer of 2000 and I only had 3: a '71 Zenith 19" color set with the 4-tube hybrid chassis, a 1991 RCA ctc-168, and a big honking 1959 Magnavox 24" combo. It was the Magnavox that wasn't working.

[Adam]

1960 Zenith with new 17DQP4...