20 Most Recent Sony VPL CS5 Multimedia Projector Questions & Answers

Without seeing it I cannot be sure but it sounds like a failed pixel. That is not repairable.

Look closely by the cover there is a small sensor there, could be a pice of dirt and door not completely closing get a cleanpaint brush or little brush and clean area..Good Luck

What sort of a projector is it?

You need to clean the filter , the unit is shutting down so it doesnt over heat..look for online manual on how to remove filter and blow off dust.. Good Luck

Are you connecting to a laptop or PC as it maybe a fault with your cable, try another one first.if this does not solve it you may have an issue with the internal main board or LCD.

Try replacing the cord that hooks to your device and transfers data