Restoring a 22C4113 Philco, had some questions

[bobwilson77]

Howdy ya'll,
This is my first TV restoration job. The lowdown is that the set had a totally dead picture tube. The original was a 21ZP4 which I replaced with a 21YP4A that is a NOS tube.

You can follow along with the restoration here:
http://www.antiqueradios.com/forums/...3720&start=140

I've recapped the set and tested it afterwards. As I've never done this before I had some questions.

First of all- I am getting no picture. The filaments on the picture tube are working. I also believe the flyback is working properly because I get a nice, healthy 'snap' when I discharge the tube. But there seems to be no sound. Just a slight hum and a crackle when I adjust the volume.

However, I made no adjustments. I simply stuck the ion trap back on and also installed the yoke as-is as well from the old tube. The new tube is very different in that for starters, its aluminized and for a weird reason also using a angled gun. Being that this is an aluminized screen I removed the permanent magnets from the yoke assembly.

I've been doing some research as how to do this. Yesterday I didn't realize that there was such a big difference on whether the trap was adjusted correctly or not, ( be easy on me... I'm a newbie!) so when I get home I'll try that. But in addition, are there other adjustments to the yoke assembly/ electromagnetic focus I should be making as well? Could a ion trap out of whack actually cause there to be no picture? What about the electromagnetic focus?

Just seeking some additional opinions before proceeding...