Some projector users may come across a dark projector screen when they use projectors.
This article will list solutions to the problem.

Case 1
Pollution of the optical path system, mainly dust and oil stains, which will affect the quality of imaging over a long time.
Solution: clean and adjust optical path.
Case 2
Brightness decreases of the bulb.
Solution: Replacing the bulb will be much better as the life span of lamp is 2,000-3,000 hours.
Case 3
Power restriction
Solution: The problem caused by projector’s own hardware. We can pull the curtain down to project in the dark room.
Case 4
The projector is in improper Setting
Solution: Adjust the brightness by means of remote control.
That are the solutions to the dark screen! May the tips help you out!