Tubes light up, but I lost sound and picture

[Captain Video]

I have this 11 inch screen set, an early 1960's Invictus TV ( Brazilian brand ). It is an all - tube set. I haven't turned it on for months, maybe some four months, maybe more. Today I decided it was time to put it to work, it was running for something like two hours, and then suddenly the screen went dark and I also lost sound. I looked inside and the tubes ( including the CRT neck ) are lighting up, so what might be wrong with this thing?