Quote:
Originally Posted by Electronic M
Some sets that used that big damper resistor (RCA 630?) had taps on the resistor to rough in one of the horizontal adjustments (forget if it was the width or lin)
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Yes, now I recall seeing a tapped damper resistor in one of my old TV books.
The 630TS factory manual says this is a coarse linearity adjustment:
"If repeated adjustments of drive, width, and linearity fail to give proper linearity, it may be necessary to move the tap on R209, which is located in the high voltage compartment. Adjustments of drive, width, and linearity must then be repeated."
The parts list describes R209 as:
"Wire wound resistor, 5300 ohms, 20 watt; 500 ohms, 2 watt; and 500 ohms, 2 watt."
Not sure what to make of that description. Why only 2 watts for the 500-ohm segments?
In the schematic, that resistor is drawn with three taps, and the default connection made at the center tap. I interpreted this to mean it's a 5300-ohm resistor, which you can adjust to either 5800 or 4800 ohms by moving the tap. Am I guessing wrong about the resistor construction?
Phil Nelson