Terry,
I don't know how you got the set to run without the audio chassis hooked up since it also contains the main power xfmer.
Here is one of my 30A13's. This set is really cute and one of the favorites in my entire collection. The previous owner had recapped it, re-tubed it, refinished it, and put in a like new 10FP4 aluminized. It quit and I guess he sold it cheap out of desperation/frustration. I got it for a song at the Rochester AWA meet a few years ago and when I got it home discovered that the big wirewound tubular power resistor in the HV cage was open. I was able to replace it without even pulling the chassis. The set makes a terrific picture, but is kinda finniky. The contrast control is an RF gain control and affects E-V-R-Y-T-H-I-N-G, from sound volume, to sync.
Mine has an electrodynamic speaker, does yours?
Rob