Thanks for the responses!

Here is some more info after doing some tests. All the low-voltages
check out (I don't have a hv meter.) When I disconnect the power
jumper to the vertical output amp the trace shows with horizontal
scan. This rules out a faulty crt.

Since I have an identical board I swapped it out with the other and
the same thing happens. Furthermore, I discovered that when the top
connector to the vertical deflection plates is disconnected the trace
also shows. This connector is sitting at +54 while the other is at
+16 which seesm to be in violation, but again this happens on both
boards. The delay line into the board is at +225mv and -204mv.

Thanks,
aaron