Question about NEC (MTLAMP820/1020) Projector Lamp for MT820, 102
18 month old nec vt590 projector that's been used less than 100 hours doesn't project RED, just BLUE and GREEN. On occasion the RED will flash in for a moment, then back to the B & G. Any ideas what's wrong?
Red, Green, and Blue signals come from different wires in the VGA cable. This sometimes happens if a cable simply is not connected fully. But it will also happen if the cable is damaged. The damage might be visible in the form of a bent, broken, or missing pin. Or it might be internal to the cable.
Try another cable.
If that's not it, then the connector on either your computer or on the projector itself might be damaged.
Also try another computer.
Components inside the projector could also fail. But I'd bet on a cable problem any day.
Posted on Jan 12, 2009
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Posted on Jan 02, 2017
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