Further 11/40 unibus questions...
ard at p850ug1.demon.co.uk
Sat Jun 6 12:30:36 CDT 2009
> Long ago, I bought a Heathkit color television -- it was gorgeous.
> Needed some work. Also, while I was contemplating buying it, the owner
> offered to throw in a 'scope, too. It had never worked he said. The
> screen was "grainy" and a new tube cost too much. I accepted. The
> television was easy to fix (Heathkit, I said).
> But, when I fired up the 'scope, I was shocked. He was right. The
> scope image could be focused, but it never got clear. It looked like
> the phosphor was painted on the tube with a roller. Then, I had to
> I took off the bezel, pulled off the graticule screen, and peeled the
> tyvek sticky paper off the back of the plastic screen, and voila! A
> nice clear trace.
I wodnered why complex electronic instruments came with such losing
manuals, after all, surely the sort of person to buy a 'scope or logic
analuyser has more than 2 working braincells. Now I know...
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