Well, I was able to get a one inch high raster on the original caps. No sound or video though. First, I tested all nine electrolytics - seven are in two multi-section cans. Only the replacement cap in the center of the chassis tested good. Two others had minor leakage. The others were all open.
So I tacked in replacements for the open ones, but now I had no sound or raster! Cleaning the tarnished tuner contacts got me some good sound. but still no HV.
I then got a scope on the hor. oscillator and found it was way off frequency so I rebuilt the whole circuit and the HO circuit too.
Every single paper cap I tested was either very leaky or way off value. Only a few of the more modern replacement caps were good.
Still no HV
Then, while fiddling around with the focus control, I suddenly got a raster back
I got an ohmmeter on it and found it was open
Rotating it fully counter clockwise would bridge the bad section and get power going through to some circuits.
I tacked in a temporary replacement and finally got a picture and sound
The vertical height control is maxed out and the picture is still squished so I'll tackle that circuit next.
