Quote:
Originally Posted by Gleb
Unfortunately, RC is just a cheaper substitution of a damper diode. It could give worse horizontal linearity, especially at the left part of the screen, and less range of hor.size control. The point is the diode damper actually helps to sweep the beginning of the lines reversing the stored magnetic energy back to the deflection coils, but RC just wastes it into the heat.
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I just studied the service manual for my 621TS. They use both the 5V4 damper and the large resistor shunting it. The 721TS, which is very similar but uses a 10BP4 doesn't use it. I looked an old Admiral schematic and it seems to use a similar circuit.
According to the 621 manual, the resistor has a great bearing on the left side horizontal linearity.
