Quote:
Originally Posted by Crist Rigott
OK here is what I did. I connected a 20 ohm 25W resistor in series with the heater string. This allowed me to increase the B+ from 124V to 135V. Going from 124V to 135V the picture just got bigger and not any clearer. My variac could only bring the mains up to 132vac.
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You can alter the heater string by replacing the damper with either a 19AU4 or a 17DE4, same heater current, 600ma.
I hate to say this, I feel, there's a problem with that CRT. If there was a problem with insuffient HV, there would be blooming and a change of focus with a change brightness and contrast settings.
I would refrain from realigning the IF, until the other problem is resolved. IF alignment problems are normally exposed when turning the fine tuning and double images are shown in the picture and other IF ringing.
