Suggestions to clean my 133″ Dalite HP 2.4 projector screen
I have 133" Dalite HP 2.4 projector. I thought it was looking somewhat dusty and unclear. So I tried to clean up the projector screen with a cotton cloth and water. I applied very delicately but I found some black spots in that area. After that I scared to clean that. I left it like that.
Could I did anything wrong here? Can somebody suggest me how to remove those black stains and tell me how to clean the projector screen without spoil the screen?
Your suggestions and comments will be highly appreciated. Thank you all guys!