Crosley Model ??

[Doug66]

The vertical issue was caused by a bad 6SN7 vertical tube. I finally have a raster but that's it. No video signal. The audio signal is a little distorted, but I'm hoping the electrolytic in the audio section, that still needs replacing, will clear that up.

The retrace lines seem to react when I tune the Tv into a station even though there is no video signal.

[Kevin Kuehn]

Sounds like you've got a sync signal getting to the sweep circuits, but no video to the CRT. The video is DC coupled from the plate(pin 6) of the Video amp(V8B), through L24, then directly to pin 2 of the CRT. L24 is a 4.5mhz sound trap. You could check L24 for continuity, or even try a jumper across it.

[Doug66]

First thing I did was try another 12AU7 which did nothing. The voltages on that tube are in line. I'm having to use the voltage chart in Riders instead of Sams. Sams has me checking some voltages with the negative on pin 6 of V15. That is giving me a zero reading. Riders is having me check against ground, and the voltages and near normal. I had that same problem when I checked the voltages on the vertical output tube.

Anyway, pin 6 gives me the right voltage. L24 has voltage on each side and checks good. Also tried jumping it which didn't help.

[Kevin Kuehn]

Is there any snow in the picture, or only a raster?

This TV has split sound - the sound picks off the plate of the 1st video IF. So your signal is at least getting through the first video IF amp. I guess I'd try changing the 2nd and 3rd IF tubes, and the video detector. Next measure voltages on those socket pins.

[Doug66]

Ok, after changing both the 2nd and 3rd IF tubes, I now have a video signal. It's not good, and the audio is still distorted. The 20uf electrolytic in the audio came in, but that didn't help. I'm still waiting on a 16uf filter in the focus coil circuit.

[Kevin Kuehn]

Originally Posted by Doug66

Ok, after changing both the 2nd and 3rd IF tubes, I now have a video signal. It's not good, and the audio is still distorted. The 20uf electrolytic in the audio came in, but that didn't help. I'm still waiting on a 16uf filter in the focus coil circuit.

Actually your scan lines look pretty well focused. Maybe try a composite video signal hooked directly to the grid of the video output tube?

[old_coot88]

Assuming direct video in gives a good sharp image, then it looks like somebody may have twiddled with the IFs.