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Old 01-12-2018, 05:38 PM
Crist Rigott Crist Rigott is offline
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Join Date: Oct 2015
Location: Waxahachie, TX
Posts: 1,519
Guys, I've got another problem! Some background first.
all through this recap and recarb, when I powered up the TV, the picture seemed weak. I had to twiddle the Contrast, Brightness, V. Hold, and H. Hold controls just right to get a picture. The picture was always a bit unstable. It would flicker and when I adjusted the Contrast control, the V. Hold would need readjusting. Though I think this might be a nature of the beast. As I went through the recap, the picture got just a little bit better. Then when I was finished with all the recapping, the picture was still a bit unstable but the flickering all but stopped.
Then I changed the 8 resistors in the tuner. Now here's my problem. I have very good audio but no video. I have a raster but no video. No amount of twiddling the controls will produce a picture. I even tried another CRT with the same results. I replaced the 6AU6 Video Amp tube and even changed 6AL5 Video Detector tube and still no joy. I checked the 2 coils (Sams L14 and L15) or ( Riders, Wallace, and Admiral L9 and L10) and they checked good for continuity.
Could this problem be caused by something in the tuner? I figured that with good audio, the tuner was doing its job.
Any ideas as to where to look?
In the meantime, I'll hook video directly to the Video Amp and see what I get.
Thanks for your help.

Here's a link to the Wallace schematic. Thanks to Phil Nelson.

https://www.dropbox.com/s/vtr06fdq1z...opped.jpg?dl=0

Last edited by Crist Rigott; 01-13-2018 at 12:16 AM. Reason: Changed recapped to changed 8 resistors.....
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