Infocus has black strip on projection
It is a malfunction of the mirrors in the DLP chip. DLP will continue to crumble and soon your screen will get black or white spots. You can replace the dung for around 150 dollars but you have to destroy the projector front to see what is the precise character so as to ordination the exact one.
Collaboration and Visualization Solutions | InFocus
Most portable computer computers require a mathematical function key or package speech act to activate/deactivate the portable computer video output signal. The chart infra lists the video activation commands for popular laptop manufacturers. more manufacturers use different commands for different models.
SOLVED: Vertical Lines on the projector screen - Fixya
When the vertical lines are displaying, yawning the projectors menu (by pushing the "menu" button). If the vertical lines impact the menu, it's a trouble with the controller board and will psychological feature to be repaired. If the schedule is NOT affected, it's in all likelihood a baggy or dented cable (Cable part# SP-DVI-A-R).
What causes a dark spot on the screen from my infocus projector? - Quora