83 GE 25" Console on the Fritz!

[AshTray900]

I have an 83 model ge console tv that is acting up. the video signal is blanking on the top from time to time and pinching in and wiggling. sometimes it seems to draw down to the bottom portion of the tv and pops in and out. static picture is 100% fine. I recently took both parts of the tuner out. checked for bad solder joints. resoldered a bunch of poor looking candidates and actually got a dead led digit back on and the problem seemed to have gone away. I am trying to narrow down my search so I don't spend two weeks checking capacitors like I did on my 73 zenith chromacolor.

I assume hv and vertical / horizontal output to be ok since static picture has no problems. is this a correct assumption?

I have no color issues during the problem, im thinking I still have an issue in the tuner somewhere but im not sure, its broken down into two parts, its a digital set and one part mounts up by the controls and the other is down next to the main chassis. im hoping someone might have seen this before and can give me a hand. sometimes changing the channel up one and back down one stops it for awhile. I have tried on both channel 4 and 3 and same results. will try to post a youtube video of the issue if the site will allow

this isn't the common vertical problem ive seen in these sets where the picture drops down an inch or two then blows a resistor, this set has already been serviced for that issue before I got it back in 97 as I can tell the culprits have been replaced. Any advice would be greatly appreciated http://youtu.be/J32vi6HFsgg

im sure I can fix it but id rather not spend weeks troubleshooting or a few hundred dollars for a complete recap when im not sure that is the real issue.