  ::: With the power supply discussion, the question to ask yourself is, how many of these methods also apply to other technologies, such as radios or phonographs? The simple rectifier and thyristor supplies were probably common in non-TV devices too, so discussion of these is probably more appropriate over in the generalized power supply article, with maybe a brief mention in the TV article but steering readers over there for more detail.  ::: The one supply that really is TV-specific is the horizontal deflection power supply. It's been many years since I looked at a TV repair book but I seem to recall that many TVs used the horizontal deflection circuit as the main power supply for everything else.  :::   