Did the brightness control work OK with the test CRT?
Yes, the brightness control works OK with the test crt. I checked the DC voltage range ( 11 to 99 volts ) from the brightness pot to cathode pin 11. That was correct also. I even tried re-flowing solder to pin 11, just for good measure. The schematic is in Sams' 91A.
Ed
06-01-2018, 11:11 AM
Hybrid Mode
