Sentinel 400-TV verticaly squashed raster

[Jonathan]

Well, I finally finished recapping my Sentinel 400TV except for the micas. It's an electrostatic set with a 7JP4. It looks like I have a good CRT. I turn it on and I get a squashed vertical lines on the screen. It's actually a bunch of scan lines squashed together. I had nothing connected to the antenna, so it should be snow on the screen, which is what it looks like, just squashed, with scanlines visible. I'm thinking a bad resistor or mica capacitor. I have another chassis and swapping tubes didn't do anything. I don't have a troubleshooting guide, and I'm afraid to go poking around under the chassis with 6kV. Is the HV working correctly? Maybe the vertical HV isn't working right?

Thanks.

Jonathan