I think here is part of the reason everyone is being so quiet,
No picture can mean literally dozens of different problems. It could be as simple as a bad tube but more than likely is a dried up capacitor (or even more likely, a few). Or one of many other things or combination of things. What is your skill level on electronic repair? The high voltage section of a black and white TV of this vintage has about 10,000 volts on it, give or take, if it's working. If you are going to poke around in there, you have to have , at bare minimum, an idea of what you are doing.
I have bought numerous old b&w TV's. Only two have ever produced a picture when I got them. One of them is still working fine, which is amazing. All the other ones either displayed a horizontal line, shortly failed after power up, or no picture at all. The first thing to do is to check all the tubes, including the picture tube, and replace all the paper and electrolytic capacitors. Sometimes you can just replace the ones in the video sections and get a picture, but many times, the ones you didn't replace will fail down the line, usually in a short period of time, which can get frustrating. Which is why I replace all of them. 90% of the time, they will work, in some fashion, after this is done. In many cases, this is all they need. But, I would never recommend a beginner with no experience in electronic repair, to try to do this. Maybe you do have experience, if so, I apologize.
I have over 5000 posts on ARF, so I'm familiar with them, but the best TV techs are right here, or here and over there. If someone takes the initiative to do some research on TV repair, someone will be more likely to give them a hand with their problem, or least an idea of where to look. The problem with your description of "no picture" is so vague that nobody is probably too interested in joining in unless you have a little better idea of why "no picture".
If I'm not correct here, you have my apologizes. You can learn to fix that TV. But it will take some time and some learnin'.
I will give you one hint, the HV rectifier tube, usually a 1B3, may very well be dead. Replacing that one tube may give you a picture, at least for a while. If it's out, there usually is a reason why it went out, and the new one may fail very prematurely because of the other issues above. Caps are a big problem in old electronics.
Hopefully this has helped you, at least a little. Phil Nelson, a contributor here, has some nicely written articles that you may want to check out.
www.antiqueradio.org