Working on this set a bit. Replaced a 100 pF cap in the vertical section and that helped the vertical linearity a bit. Need to test resistors in vertical section and replace as needed. Definite improvement though. See the below video. Can anyone identify the issue of the horizontal lines flashing up on the picture? Lines appear to be both black and white if you look close. Set is totally recapped now. Waiting for resistors to come in.
http://youtu.be/6ngQB28AaFA
Thanks!