Entertainment Center: TVs, Stereos, VCRs and DVDs - need help TOSHIBA 44NHM84

i recently got a used TOSHIBA 44NHM84. the picture was freezing randomly while the audio would continue. after reading here and other forums it appeared that the issue was with dmd driver board. i disassembled the whole unit, reseated the color wheel, cleaned the dmd driver board (had a lot of collected dust on it and i thought this was causing the freezing issue)

now i have great picture but the whole display is shifted up by about 2 inches. the focus is great and i did not touch any mirrors inside. if i move the light engine assembly up or down i can get the picture to move on the display but i do not see any way to keep the light engine in new position.

i see that the one of the mirror in the light engine assembly is adjustable with spring loaded screws. would moving one of these mirror center the picture or is it a software correction via the upgrade port.

the light path appears to be
lamp-- light tunnel--color wheel--mirror(adjustable)-- mirror fixed-- dlp chip (via ?prism and lens)-- focus ring-- big mirror on back wall-- front screen

i have the service manual but it does not talk about this issue.

thank you for the help.

You probably need to put the TV into service mode and adjust the convergence. Hopefully your manual tells you how too do this.