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.
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Usually the unit will go into permanant standby if the lamp life exceedes its safe limit. I had the MT830/1030. To reset it I had to press the off button down for upto 20seconds which resets the lamplife. If not the off button it was the on button.
Some of the NEC units have a standby status when the lamplife has
exceeded its safe limit, the unit I had needed the off button pressing
for up to 20 seconds to reset the lamplife and allow the unit to be
switched back on. There should be info for this in your manual. (It could have been the on button, can't remember now)
The NEC’s work on a reducing time basis, they count the hours that they have been operational and refer to this as the life of the bulb – 1600 hours. When the 1600 hours has been reached the projector shuts itself down into standby mode never to be restarted even after changing the bulb / filters. This is because the unit needs to be reset, which needs to be done as follows (not included in any of the bulb replacement instructions):-
Plug Projector in so it is in standby mode – Orange light lit, Red status light lit (not flashing)
Using the remote control, hold down the power off button for 30-45 seconds
This will reset the status button, removing the red light
Power up the projector and select Menu
Select Projector Options
Select Set-up – a number of tabs will appear called pages
Arrow across the pages (MT850 is Page 5) until an option called “RESET LAMP HOURS” is shown
Move onto this option and press enter on the projector itself, confirm that you want to reset the counter
Projector is now back to life
This works for all NEC projectors, the page number may be different though where the “RESET LAMP HOURS” option resides.