Early television was a hotbed of hacker/hobbyist DIY experimentation much like early radio and early personal computers. The first issue of "Television Magazine" from 1928 (https://comicbookplus.com/?dlid=37097) has a remarkably similar vibe to 1970s computer zines (https://archive.org/details/kilobaudmagazine-1977-01/).

For example, page 26 has directions on how to pop by the local chemist to pick up materials to make your own selenium cell (your first imager) and page 29 covers constructing your first Televisor, including helpful tips like "A very suitable tin-plate is ... the same material out of which biscuit tins and similar light tinware is made. It is easily handled and can readily be cut with an ordinary pair of scissors. It is sold in sheets of 22 inches by 30 inches. Any ironmonger will supply these."