[Adam]

I was working on this today trying to fix the vert. linearity problem it had. I'm not near a scanner now, so I will try to describe how it goes. The vert. output trans. is connected on one side to the cathode of the vert. output tube, in the middle to the vertical portion of the yoke, and on the other end of the coil to the other side or the vert. portion of the yoke and the horiz. output trans. at the same place one side the horiz. portion of the yoke is. It is seperated from the horiz. out. trans. by a 3.9k resistor, after which is a 30mfd capacitor connected to ground. Am I correct in assuming the vert. output tarans. is just using the connection to the HO trans. as a power supply and for no other reason? Anyway the 3.9k resistor was on its way out at only about 20k, so I replaced it. Afterwards the bottom edge of the picture would not fill the screen at the corners, in the same way it would if the yoke was moved back along the neck of the picture tube.

Originally the problem with the picture was that, first of all only the top half of it was visible, it would fill the screen, but it was stretched out and the bottom portion was not on the screen anymore, if I was to adjust it so the whole picture could be viewed, the top 1/3 of the screen would be empty, and the bottom 2/3 would have the entire picture. After replacing that resistor, this problem did not go away, the other one just started.

Then, I just decided to replace the vert. out trans. I had a spare, and even though the one in there tested OK (off by about 10% as to the resistance in the coil), it just didn't look like it should be working properly, so out it went. This actually fixed the linearity problem about 80-90%. Exactly what was happening, I'm not really sure, but I was happy it was working better.

Then I go and try to hook it to a VCR, so I can get something with a strong signal and a still picture to adjust it by. But when I hook it the VCR now all I get is sound and a blank raster. First of all this TV already had a strange tuner problem (it gets ch 5 on ch3) but otherwise its fine in that area. So I had been using the VCR on ch 4. Now it gets in ch4, sound and picture, if I use an antenna. But if I hook it to the VCR, just sound and a blank raster. If I remove one of the wires from the tuner, when connecting the VCR I get a picture, but its like one would expect with only one of the wires connected, full of snow and bad sync. But put both wires, and I'm back to a blank raster?? I tried the VCR on other sets, and I also tried other VCRs on this set, so I know its the TV. I can't imagine what is doing this. And if this has anything to do with changing the vert. out. trans., which I think it can't possibly. I can put up a schematic when I'm near a scanner tomarrow, thanks for any ideas anyone can give me, I've never seen anything like this before!?