no picture but tube glows 194? olympic

[rob Cashin]

i acquired a late 40's Olympic tv today. it was in pieces in a long retired tv repair mans garage along with a few other goodies i got. well anyways, i took it all home, cleaned connections and dug out my boxes of tubes. well, the chassis of the tv is out . probably stupid of me but i cleaned it all up and plugged it in. all the tubes came to life after i replaced 2. ok that looked good. well, i left it on for about 5 minutes. everything was glowing, even the filament on the back of the crt. no picture came up. now, i am a chicken with old tvs, ive had a few arc out and sit me on my @$$ before, but i love the round tube on this set, id like to get it working. is the picture tube bad or is it a cap issue?