I had a similar problem installing a component out on my childhood SNES long ago, but not as bad as your image shows – it doesn’t have the vertical lines, only the garbled tiles.
The lines off the encoder chip kept falling off (’cause I’m not very skilled!) and I think I was a bit too long with the soldering iron and fried the encoder a bit.
Some games work okay, but others like Street Fighter 2 display these garbled tiles and the game locks up after I select a fighter.
Haven’t found a fix yet, and it seems to be getting worse the longer I leave it in the closet.