Quote:
Originally Posted by jr_tech
Great work! congratulations!   
I am wondering about this “bias” control... does it set cut off of the CRT? Where is it located in the circuit?
jr
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Here is a section of the schematic from Sams. It is R9. Below it are the Alignment instructions that talk about setting the Bias Control. Frankly, how or why its there is above my pay grade.