Had my big screen out for repairs. After the tech completed repairs,
reinstalling the "light box", my picture is off center. ( high and
left, showing a white line at the bottom, and chopping off the left
side slightly)
Called the tech back but he did not know how to correct the problem.
Are there adjustment screws to realign the picture? Where would they
be located?

Thanks,
Richard

Sounds to me like the box is in crooked, or, if the mirror is one of the
fold-in types, it may not be properly tightened in place