CTC-5 Westcott restoration

[old_tv_nut]

Originally Posted by SwizzyMan

Not quite satisfied with the color temperature. While trying to do a proper temperature setup I ran into some difficulties. The manual says to turn the green and blue background controls 30% up from being at counter clockwise. And to turn the contrast control to the halfway position. I know what all this means but how could I tell where 30% is on the screen controls and where halfway on the contrast control is?

They are asking to set mechanically at a certain fraction of full travel (which should be somewhat less than a full circle max). So, just try the full mechanical range to see how far the control can turn and then set it an estimated halfway or 30% of the way as instructed. These are just starting points to get you somewhere with visible light on the screen.