[old_tv_nut]

Originally Posted by Spinning Head

Thanks for sharing the old Moto promo lit. I like the final all over test photo. It looks like the guy is smacking the set.

Don't know if that's what's going on there, but I do know that at Zenith there was a final test called something like "JWS" (Jumps When Struck) which was done with a rubber ball on the end of a sturdy stick, banging the set on both sides and the top. If the picture jumped, the set was sent for analysis and fixing of whatever was intermittent before being OK'd.