Roundie left edge purple

[DaveWM]

Next plan will be to check the "focus" adj. Its a coil that is tied into the horz winding of the yoke, you adj the focus by adj this coil. So the plan will be to check the cathode current and see if that coil has any effect. I will deal with the focus afterward. It uses a stick rectifier, so perhaps that could be an issue, that ady the focus coil is just overcoming, at the expense of excessive cathode current. Just speculating at this point. I need to check the drive waveforms and voltages in the horz drive circuits.