My new RCA CTC-25!

[dieseljeep]

Originally Posted by old_coot88

We were a sales/service dealer and sold a boatload of '25s. Biggest beef with 'em was the chincy channel selector/indicator/fine tuning setup. They didn't eat 6GH8s nearly at the rate of the 'short chassis' CTC-19, 20 and their follow-ons.

I had cited the problem a while back, about the channel selector setup. RCA only used it one year. That and the loose P/C grounds and of course the 115876 fly. The CRT's weren't that long-lived either.

[old_coot88]

Yeah, they did eat flys and jugs too. Getting them thru warranty was always a challenge, but that was par for the course for with all color brands. Five years was considered reasonable lifespan for a color set.

With RCAs we routinely changed the power xfmr primary to the 'high line voltage' tap, to drop the 6JE6 cathode current a few notches, and dipped the efficiency coil. Surprizing how many were not on 'true dip'.

[dieseljeep]

Originally Posted by TUD1

Replaced the audio output transistor and now the audio is back.

It seems that the 25A was the only RCA chassis, that used the solid state audio board. Most of the 25's I worked on had the tube audio.
I think RCA quit using it because it was more trouble prone.
I have a year newer CTC28, that uses a tube audio.

[BigDavesTV]

The CTC-25 that I had, years ago, was identical to the one Tim "Kamakiri" has pictured! It had the fancy speaker on the left side of the CRT only, different model from Universal Dave's set, which has the fancy speaker on both sides of the CRT!

[TUD1]

I got bored today, so I did a little dynamic convergence on the Beauchamp. I'd say turned out pretty darn good.

[TUD1]

Originally Posted by BigDavesTV

The CTC-25 that I had, years ago, was identical to the one Tim "Kamakiri" has pictured! It had the fancy speaker on the left side of the CRT only, different model from Universal Dave's set, which has the fancy speaker on both sides of the CRT!

The Dumas.