Quote:
Originally Posted by Tom9589
Check the voltage on Pin 9 of the CRT while you vary the brightness control. If it doesn't vary, you might have a heater-to-cathode short in the CRT. An isolation transformer (looks like a CRT brightener) can cure that problem.
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I thought that I might have a heater to cathode short as well. I'll have the chassis up on the bench(desk) later today but I think the voltage did vary last I checked. The brightness range does change from bright to very bright!
Thanks!
Matt Davala