the lynx 2 is not that hard to work on really(i have no problem with it).how
did you lose the brighness wheel anyway?that is rather odd.i'venever had
that happen on a lynx I or II in thirteen years of having some 8 units.
it is not real hard to make yourself another wheel out of some sheet plas-
tic(thick).do you have an old pocket radio or cassette or cd player that is
not working?many things use the same or similar volume wheels and such
on them.you may have to trim it some for your lynx.improvise,my boy! it
helps get things fixed.

-chris