1976 Quasar console

[Electronic M]

Deltas are easy: get purity right, throw up a crosshatch pattern, get static (center) convergence right with three convergence clover magnets + blue lateral on neck, then go after the dynamic (area surrounding the center) convergence controls (on the board with all the pots and adjustable coils on it). Be aware that the dynamic controls rarely are capable of perfection over the whole screen. So once you get it right inward of 1-3" from the edge of the screen, and can't get it better, call it 'done right', and be happy.

[Findm-Keepm]

Originally Posted by Electronic M

Deltas are easy: get purity right, throw up a crosshatch pattern, get static (center) convergence right with three convergence clover magnets + blue lateral on neck, then go after the dynamic (area surrounding the center) convergence controls (on the board with all the pots and adjustable coils on it). Be aware that the dynamic controls rarely are capable of perfection over the whole screen. So once you get it right inward of 1-3" from the edge of the screen, and can't get it better, call it 'done right', and be happy.

+1 - and concise!!

Important words above - "Be aware that the dynamic controls rarely are capable of perfection over the whole screen" - how true!

[Jon A.]

Originally Posted by Electronic M

Deltas are easy: get purity right, throw up a crosshatch pattern, get static (center) convergence right with three convergence clover magnets + blue lateral on neck, then go after the dynamic (area surrounding the center) convergence controls (on the board with all the pots and adjustable coils on it). Be aware that the dynamic controls rarely are capable of perfection over the whole screen. So once you get it right inward of 1-3" from the edge of the screen, and can't get it better, call it 'done right', and be happy.

Now I almost have enough knowledge to do this. A couple of questions though: where is the purity control, and how would I know when it's been adjusted properly?