Most Sony computer monitors lack a screen adjustment knob. They have
to be adjusted via computer software and an interface cable. If it's
too dim to use, chances are the CRT is weak, or there's something else
wrong with the monitor and adjustment won't fix it.
Andy Cuffe



finally some useful information. thank you!
this is unfortunate. unless one of the two knobs I found is a screen
adjustment knob. but if you're correct, than this is unlikely.
you said an interface cable.. is there a way to purchase this or make
one that you know of?