A purple and yellow pattern has appeared in the corner of the screen when using the data projector. Any ideas as to why this has happened? The bulb has been changed and it still occurs.
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Could be a few things....first you need to isolate a signal source issue or a faulty LED lamp. Simply unplug your signal source and run the menus on the projector.
Purple Gone with source unplugged = faulty source our signal
Purple still there = faulty device
Sounds crazy but make sure you have no interference devices running real close within say 2 feet. cell phone, microwave, magnets, high voltage eletricity...etc
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Check cable from computer (VGA cable is loose, or bad) one of the pins is not making contact. Try another cable, if that doesn't cure it then you have a bulb going bad.
You should firstly test the projector using some alternative input sources, and using different cables to establish that the pink/purple tinge is consistent across all inputs.
If it is, then your projector is in need of professional repair. You should be able to contact 3m here who can advise who their local repair agent is.
It is not the smartboard, lamp or the computer as well know, it's the projector itself. This may not work but you at least need to try press the auto adjust button on the projector and then adjust the clock/phase in the menu. If not you will need to send in to NEC it could by the color wheel. Usually they have a warranty for a couple of years.
You are missing one of your primary colors and this is usually to a faulty pin where you are connecting your vga cable to. It could be either the pin on vga port of your projector or it could be the vga cable itself. Please look at the pins especially if you are using one cable to try with all the compputer.
Sounds like the same problem that I just started having. Although my scribble lines are yellow. Personally I'm thinking that one of the three LCD panels has cracked internally and will need to be replaced.
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