No, "Betty Boop" was not a TV series in 1930
https://www.imdb.com/title/tt15180956/ is a supposed TV series titled "Betty Boop" which supposedly debuted in 1930.
As I'm sure everyone reading this already knows, television broadcasting existed on only a very limited basis in 1930. The Betty Boop series of theatrical short films began in 1930 -- these films were not broadcast on television until years later.
What's worse, apparently every Betty Boop theatrical cartoon has been converted into an episode of the supposed TV series -- they are no longer entered as theatrical films. I was just looking for The Old Man of the Mountain (1933) and didn't see it at first, because it had been listed as a TV episode (https://www.imdb.com/title/tt0024404/) instead of a film.
This isn't even the first time someone has created a pseudo-TV series for "Betty Boop" starting in 1930. As discussed in the thread here, there was another entry for "Betty Boop" (1930) in 2019, which was deleted. Why was this series allowed to be re-created when it was already determined to be an invalid entry before?
IMDb claims to be "the world's most popular and authoritative source for information on movies, TV shows and celebrities." Yet how can IMDb be considered authoritative if it doesn't demonstrate basic knowledge of television history, like when television came into common use?
As I've said before, any television program submitted to the database with a start date in the 1930s or earlier ought to be scrutinized by an IMDb staffer to see whether it actually existed or has been submitted erroneously. In this case, the submission was erroneous.