Crosley bakelite tv

[Radiotronman]

Ok I changed a 120pf mica on the 6sl7 sync clipper tube along with a pulled out of tolerance resistors. It will lose sync for a few seconds from time to time, but will snap back. I've also got to figure out where my audio is lost. It's by no means perfect, but we are getting somewhere...

[old_coot88]

Originally Posted by Radiotronman

Ok I changed a 120pf mica on the 6sl7 sync clipper tube along with a pulled out of tolerance resistors. It will lose sync for a few seconds from time to time, but will snap back. I've also got to figure out where my audio is lost. It's by no means perfect, but we are getting somewhere...

Vid. detector diode's OK. Scratch that idea.

[Kevin Kuehn]

Definitely an improvement, but from here it looks like any awfully snowy picture, like the station is not fine tuned on frequency.

[Radiotronman]

Yeah, this is my first experience with continuous tuners. It can be hard to completely lock in the channel you need. Any ideas on my list audio. My audio output is good(6V6) and my sound If amp(6Au6) is good too.

[Radiotronman]

Audio section. Thanks everyone for all of the help so far!!

[dieseljeep]

Originally Posted by Radiotronman

Audio section. Thanks everyone for all of the help so far!!

The set uses the audio output tube as a voltage divider. The cathode circuit is the source of lower voltage B+ for the IF, audio amp and tuner. See if the audio circuit is working. Maybe the cathode voltage is low.

[Radiotronman]

Thanks dieseljeep! I started looking in the audio circuit again, but couldn't find anything wrong. Then I got to thinking about the black plug that goes to the plug on the speaker. When I got this set, one half was partially broken, leaving a couple of pins dangling from their wires. I thought I "guessed" right on where they went, but I guessed wrong. There is no guide pin on this plug, just a couple oddly spaced pins to keep it one-way. That's where the plug was broke. A little more focus and I figured it out! Audio is plenty loud and working fine now!

[Radiotronman]

I've got the horizontal and vertical to stay locked and audio is pretty good. I've got to find out how to fine tune this set. Sound gets louder and better as you begin to turn the tuner away from the channel.

[Kevin Kuehn]

Originally Posted by Radiotronman

I've got the horizontal and vertical to stay locked and audio is pretty good. I've got to find out how to fine tune this set. Sound gets louder and better as you begin to turn the tuner away from the channel.

Looking better. You could try tuning for best picture, then tweak the primary and secondary of the sound pick off transformer(L25 in Sams) for best sound. But it looks like the top adjustment is a bugger to get at under the yoke.

[Radiotronman]

Ok, got the audio pretty good and the set back together. Restoration complete!

[Kevin Kuehn]

Looking good!