I recently picked up one of these and it seems to have some extremely strong artificial sharpening. Either that or there's some other problem creating the typical halo artifacts you see with a high Sharpness setting. Unfortunately there's no Sharpness knob and I can't find a schematic for this CRT anywhere, not even on the paid sites. I looked over the whole board and didn't see any potentiometers except the R / G / B ones on the neck board.
Anyone know if there might be a way to disable the Sharpness or turn it down? Even if it involves something like scratching off a trace. I really like the picture but the Sharpness artifacts make it awful for gaming:
