I replaced the one tube that wasn't "glowing" in my '52 Philco, tube # 6BQ6UA.
It was one of two tubes inside a metal box. I took a chance and turned the tv on after I replaced the tube. The good news is that I have some sort of pattern on the screen so I guess the crt works. I have enclosed a picture because I don't know what to make of the image on the screen . Any advice would be greatly appreciated.
tv7.jpg