In case you were thinking about forgetting how good we have it here in The Future, here is an article from Popular Science in 1961, to help readers figure out which tube in their TV set needed to be replaced. Good times.
Depending on what kind of crappy your picture looked like (apart from the "working perfectly" kind of crappy that you and I would call a TV from 1961) , you could possibly diagnose which of the dozen or so tubes in your set had bit the finger, and then run down to the hardware store and (probably) find a replacement. Maybe your video amplifier tube had become gassy? The article doesn't seem to mention how to figure any of this out if there's more than tube wrecking the picture at the same time. Also remember that 1961 TV would cost a few months' of your pay to buy, too.
Truly, readers, we are spoilt.