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I feel safe knowing someone else will reply with more knowledge. I have no real electronics knowledge. I want a chance to take a stab at the power supply here and learn some from other people that will reply.
The B+ current does go though the controls, and they are of low resistance. They have to be because there is hardly a voltage drop before and after the pots. 280 Volts off the cathode of the rect tubes and 275 at the highest B+ output.
If the capacitor blew, disconnect the positive lead from the cap and power up the set using a variac, or light bulb in series trick to prevent something else from smoking.
Check your B+ voltage and compare to what the schematic says. You didn't mention it, but did you replace the electrolytic caps yet? Thats the most likely reason it failed. Others will fail too in a matter of time.
Good luck fixing this set. I'm 25 and have the luck of repairing one TV and it was due to re-capping the TV. It was a 56' model GE and not too complicated. Your 630TS would be a complete nightmare for me! I would be dreaming of paper caps chasing me. . . . chasing me towards . . . . towards . . . dreaded Black beauty caps!!! AHhhhh.
Good luck! Oh if you are testing B+ and its lower than it should be, disconnect 1 electrolytic cap at a time until the B+ goes back to normal. Or just replace the electrolytics.
Have fun and enjoy and keep me/us posted with progress. Do not give up!! Not an option.
Best regards,
Matt Davala
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