Quote:
Originally Posted by TheNic
I remembered this externally exposed pot as for adjusting the height of the image or something like that. But it can actually be used to stabilize the vertical signal!
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Vertical Size adjustment can have an impact on the vertical hold as well, so you have to look carefully at how the pots are labelled. If it says "vertical size" then it's vertical size. You need to find the "vertical hold" adjustment, which is often times on the rear of the set (but not always for sure).
If you are sure you're making the correct adjustments, then you might need to adjust the fine tuning on the channel selector if you haven't done that yet. The image you showed in your video looks like it might just be slightly out of tune or something.
If it's something more serious, I can't help you as I'm not very good at RF stages. Someone else here would need to comment.