Okay, new update video:
https://youtu.be/WAhnuri57XQ
I've replaced all the remaining caps from C1 and C2. C1 is now within the correct temperature range, and anything that could have been stressed from previous mistakes in C2 is new.
And actually, the buzzing seems better. So I think that was the right move.
Here's my current remaining issues:
- The vertical is still not hitting the bottom half of the screen.
- That color bar is still visible.
I feel like I should say that I really jumped into the deep end with this one. At this point I'm entirely out of my element. But I don't want to give up!
So basically from this point on, I'm standing by to hear what measurements you would all like to see to move forward. Personally, I'm wondering about the health of the yoke and/or flyback. I say that because my HV is several thousand volts too low, and the yoke could be contributing to my vertical issue. Is there a way to check that?