Back with a 630-TS Problem

[Chris K]

Hi all. Good to be back. Life got really, really "lifeie". Re-configured the shop as well. Just got overwhelmed with TVs, parts and junk.

I'm working on the granddaddy of post war RCA TVs. The horizontal is completely unstable, "twitching" almost like something is intermittently arcing although I can't hear or see anything. It won't lock. C168 on the phase can, value 153, has been replaced in fact, EVERYTHING in the horizontal circuit has been replaced. I guess the first thing I should do is check for cold joints. All the tubes in the horizontal circuit have been replaced multiple times with known good tubes. Any suggestions as to where I should start?

BTW, just for anyone who remembers my issue with the T-65, KCS47 and the bent hourglass sides, it was the yoke swap I did. The original yokes are back in place and it's got a rectangular picture. Not magnetized.