Admiral 14R12 Restoration

[Crist Rigott]

The video saga continues. I messed around with the response curve some last night and today. I got the double hump and the pips were at the correct frequencies per Sams and Riders. I then hooked up my D to A converter and I got audio, but no video. I tried my DVD player with my RF converter but got the same thing.

So I went back to my pictures that I took when I got the TV and placed the slugs about what they were in the picture. I hooked up my 360 and O'scope and I had just a single peak curve. Hmm......

I then hooked up my D to A converter and now I was getting video and audio! I then tweaked the slugs to get the best picture and the audio slugs to bet the best sound by ear.

I then went back to the 369 setup and tweaked the curve to the one in the picture below. The pip at the peak is at 20.3 and not at 24.3 but it is playing nicely.

I then hooked up my DVD player RF converter and sure enough I have a pretty decent picture.

Back to the DtoA converter and I took the picture below. I realize I need to adjust the focus coil, linearities, etc.

I checked my frequency counter by inserting the 10.7Mc crystal into the 369 marker slot and turned off the variable marker. The frequency counter read 10.690067 or something very close to that. So I'm pretty sure that the 369/frequency counter are good.

Any explanations as to why it works on 20.2 instead of 24.3?

Could there be anything that the tuner would cause this? I did replace the resistors and some caps in there. I did pay attention to lead dress, though they couldn't go any other way.