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Quote: Spent a bit of time on the set tonight. It is working well. Issues are fairly minor. Here is a rundown of the good vs bad points.
comments interspersed:
The Good:
1.
2. Convergence very good. Better than I had expected with the electrostatic convergence.
IF you adjust adjustments 82-88 (of 88!) carefully you can get almost perfect convergence. These are the tilts and translations of the yoke.
The Bad:
1. Cannot get as good purity as I think it should.
My first CRT, now gassy, had great convergence. My current one has
a bit of red in two places that I just can't get rid of. Its really very minor,
even on a B&W picture.
2. AGC problem.
I had the exact same thing. Simple cure: since you are running on a
local modulator, signal is too strong. Install a pad right at the set terminals. I have a cheapie balun followed by a balanced 300 ohm pi-pad made from 1/2 watt resistors. That instantly cured this infuriating problem. Signal to noise is still essentially perfect. I recall that my uncle, in 1954, had the exact
same problem ... he lived 3/4 mile from the tower!
But it was already known, since his huge B&W set had the same pad necessary. So does my Hallicrafter's 7 inch set. Other sets work fine with the huge signal.
3. 15GP22 socket intermittent.
I had the same problem on a filament terminal. I got a replacement socket from the ETF but did not use it ... I just carefully bent the contact a tiny bit
in the original socket. The replacement would work, but its not the same constrution and would need some machine shop work to be reliable.
I hooked up the DVD player and played the prerequisite Wizard of Oz...
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