Thanks Tiido, better safe than sorry 😀
It's a success! I wouldn't call it perfect, I have a still visible somewhat "higher frequency" VGA noise if that makes sense, but it's still substantially less visible! Is it something that could still be improved by choosing different caps? Or is it the best I can do right now with this board as only +5V can be capped?
Coming from a no electronics background I just can't get enough of the stuff. I am still very much in the "how" phase and now have a pretty OK grasp of soldering, having recapped a few complete boards successfully, a few other fixes here and there, and it's so satisfying! But I am still doing what I'm told to do with only surface-level understanding. I would really like to get into the "why" phase and teach myself some basic electronics, but a bit overwhelmed about where to start. Oh well, let's not go off-topic 😀
In any case, huge thanks to all of you that helped, appreciate it a lot!