I'm new to the world of the VIC-20 (and even C64) but I'm enjoying diving into it and learning all I can about it.
I recently acquired my first-ever VIC-20. It was completely filthy, but that's easily fixable. The computer starts up fine but the video was completely gray. I was able to do some searches and learned I could probably fix it tweaking the C48 potentiometer. Indeed, that fixed it right up.
The board itself is a revision D PAL. Everything else seems to work fine and I was able to load some games, but I'm not able to get any video with the composite cable (the cable was tested on the C64 and the people I bought it from claim it works on the V-20 as well). The output is completely black. No noise or anything.
EDIT: Cable was not hooked up properly
![Embarassed :oops:](./images/smilies/icon_redface.gif)
Another question: I noticed some ugly-looking modifications in the underside of the board. They are under the box area (which I'm guessing it's some the video generation): Any idea what that is? Is it a patch from the factory or is that a mod someone did afterwards? I looks pretty darn ugly!
Thanks!