|
They have a retrace suppression circuit. Looking at Sams 466-1 they pick a signal off the vertical output transformer and feed it into the brightness control. Check R26 and C27. They show a dashed line across R26 which I think means in some version it's shorted out. You might want to try shorting and unshorting that resistor.
BTW I note in your photos that the image is stretched vertically and doesn't fill horizontally ?
|