During the first game there are problems with the switches to indicate the panellists are ready; Willie Rushton punches his to make it switch on, while Roy Hudd's panel falls off his desk.
The camera jolts slightly when switching to the panel around the 9'15 minute mark.
Contestant Steven Palmer forgets to flip over a panel to indicate he's got a correct match, causing Terry to remind him.
The camera wobbles badly around the 18 minute mark when focussing on Beryl Reid.
Terry walks past a piece of off-stage equipment around the 12 minute mark; however, as Blankety Blank is a free-spirited show that often sees Terry walk off set, or mistakes happen as part of the regular set up, this isn't a "goof" in the way it would be with more polished quiz programmes.