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#11
09-19-2022, 10:10 AM
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Notice pin 8 of V6 on the 6HS8, it gets power from 640v boost via R92, if the horizontal oscillator is NOT working, then this voltage is obviously not there for the plate to use, making the tube NOT happy, it will try to get power from someplace else, like the grids, this can overload and damage the tube.
From what I understand, V6 is not needed in the set for horizontal oscillation to take place, can be removed while you debug the horizontal oscillator circuit, it IS needed to sync it to incoming video however. And as been stated many times by many here, an oscilloscope, even a crappy $35 one, would be a great aid to you at this point.
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