I dug out this one and decided to play with it. Currently, the picture is dim with lots of bleeding and smearing. If I advance the brightness too high, the picture becomes washed out. Checking the collectors of the 3 video output transistors reveals only 46 volts (no matter if the CRT is connected or not). The B+ that feeds the video output circuit is around 124 volts; and, I think this voltage should be at least 100 volts higher. It was getting late and I didn't have time to check anything else; but, I suspect a bad cap in the B+ line to the video output stages. I've seen it happen a lot in later sets. I suspect this one will have a very sharp picture once I get it working right.
10-27-2010, 01:03 AM
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