--- In TekScopes@..., Jim Popwell Jr <jpopwell@...> wrote:
HI CHRIS,
I would do the astig and refocus….astig…and refocus for sharpest beam definition. use the calibrator and adjust for best looking sq wave…then kill the vert deflection and the horz deflection…turn the intensity down and adjust both again for the sharpest spot….increase the intensity and readjust both again…then go back to normal sweep…….
NOW DO THE CAL procedure on the display bd.
there are a couple of adjustments on the bd that will straighten out the "jumpy double" characters.
won't take much time but will make a big difference.
if i remember right these characters were created by different currents at different times… so a little too much or too little current misshaped the characters.
i often find the right controls, then adjust them by eye for best display, by finding the sweet spot of the adjustment. i.e. find the ends of the range where the adjustment makes a total mess with the adjustment one way then going back thru the best look…until you get a mess again……...then splitting the difference.
jim
I don't feel 100% confident fiddling with it that deeply, to be honest Jim. if it was an old nail, no worries, but with it being brand new old stock I would rather pay someone that knows what they are doing to have a look, or to just try another display board. I'd kick myself if I @#~%$*@ it up ;) I know it's not worth a lot, but it's kind of nice being "new", I doubt I'd find another very easily. Thanks for the detailed reply Jim.
