[Jeffhs]

I just read your post regarding your National TV-7M TV. I don't know much about National TVs or radios (my most recent and only experience with National-built gear was with an old US military RAO-7 AM-SW communications receiver back some time in the 1970s; the radio had been built by National, as the small National logo--the letters "NC" within a diamond--proclaimed). In fact, I never knew National even had anything to do with television, until I saw your post.

The company may have produced a few TV sets in the early 1950s after WWII, though; I seem to remember seeing at least one Sams Photofact for a National TV from the early to mid 1950s (my dad had a file cabinet full of them in his workshop in the basement of our house in suburban Cleveland, when I was growing up), but I'm sure that PF wasn't for your set. In fact, if memory serves me, that particular PF was for a 1950s-model 19- or 21-inch console (no remote) with a rectangular CRT.

I do hope you can restore your National TV to operating condition, although to do so you will almost certainly need to replace every capacitor in the set, including, of course, the power supply filters, since the originals are well over sixty years old and have likely failed. This is especially important in the set's power supply, as shorted caps in that section of the set can and will cause serious problems, such as destruction of the power transformer, among other (often irreplaceable) components.

Do not try to power on this TV unless you do so using a variable-voltage transformer (Variac), and be ready to pull the plug immediately if you see smoke or sparks anywhere in or on the chassis. I cannot emphasize strongly enough that you must not power on this TV, or any very old TV, radio, etc. indiscriminately. It will not work, and again, it could be and probably will be irreparably damaged, if it doesn't catch fire or blow the house fuse first.