Question about NEC MultiSync MT830 Multimedia Projector
I have an epson 821p mounted in ceiling a media center at my school. The projector is wired to the wall I have two computer lines going in vga mode, I have then the wire coming out to the ceiling and going into the projector. We have a company that comes out and installs them this way for are whole district.
I have other electronics running thru the ceiling, heating cooling, lights, infared sensors for alarm. I have tried several projectors and get the same results I have lines continually running thru the screen. Is something interferring? They are white lines, no color in them. The run vertical and scroll thru the whole screen. The sound seems to hum too. Any assistance would be greatly appreciated
This is definatelly a interference from a power cable. If any of your signal cables in the ceiling is closer that 5cm to one of those , you will get interference.
The Company that did the installation should know this and I would suggest you call them and tell them that they should sort it out. They should either move the cables or insulate them by means of conduit.
Posted on Apr 16, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
Press the Menu button.
Select the Advanced menu. You see the features and their settings on the right side:
Press Enter and use the directional buttons and the Enter button to set the following option:
Front: Projector is in front of the screen
Front/Ceiling: Projector is in front of the screen, mounted upside-down from the ceiling
Rear: Projector is behind the screen
Rear/Ceiling: Projector is behind the screen, mounted upside-down from the ceiling
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