20 Most Recent NEC VT470 Multimedia Projector Questions & Answers


Have you selected the correct display on your computer as it will need to know to send display to external screen?. I assume your pc was a desktop, not a laptop.

NEC VT470... | Answered on Apr 02, 2017


its a common problem of the video hardware in the laptop - it hasnt the ability to split the video "overlay" (often its decoded by something in the video chip, or at least a seperate bit of software and output seperate from the usual, slower windows & images data stream) off to the second screen & you just see the frame of the player.
if you set the external output to be the main/primary, or sometimes only active screen, it should work. you might also have a chance if you make it an extended desktop rather than a cloned one, then moving the player window entirely onto the projector's "screen"

NEC VT470... | Answered on Jan 08, 2014


Rather hard to properly diagnose this one off such a short description, but...

1/ Bulb OK, not over hours or otherwise damaged?
2/ Is it constant for all images, just a general coloured haze, not a strange "shadow", "ghost" or "fringe" that alters depending on what you display?
3/ Lens nice and clean?
4/ Surface you're projecting it onto also clean and at least nominally white?
5/ Input cables all fine at both ends and work correctly with other output devices (TV and/or computer monitor)?
6/ Haze still in place with different cables and input devices?
7/ Does the projector regularly show the same static image for extended periods?

The VT460s were buggers for suffering from internal LCD and filter glass issues if allowed to overheat, and with image burn-in, especially if fitted with unusual lenses (e.g. extreme short-throw); I've had to do internal cut-and-swap surgery on a few of them before, with donor image elements from projectors that died due to other problems. I can't say the one VT470 has shown any sign of similar, but the two VT480s are worse if anything. So it's entirely possible that we just got the one good VT470 out of the whole production run. As intimated by the above, it could be anything out of a failing bulb, dirty lens (or internal image element) glass, image burn-in, LCD/filter damage from overheating (and mind that being turned on showing a "blank" screen for ages can cause a similar effect, as all of the bulb's 200 watts of light energy is then being completely absorbed by three thumbnail-sized pieces of liquid crystal... the bulb doesn't turn off unless the projector is shut down completely!), problems with internal circuitry, dodgy cables, unsuitable projection surfaces, or problems with the devices feeding images to it. It really is a minefield until it can be narrowed down.

NEC VT470... | Answered on Jan 08, 2014


I'm with Greg on this, I've had both of those problems individually on different VT4xx's (having both a number of them and a working knowledge of screwdrivers, figured out what was up by process of elimination). Sometimes bulbs die early - if it's really early you might want to see if there was any warranty period remaining on it - and the power boards in these projectors do sometimes break down. They were built in an at-risk period for having troublesome power capacitors installed into them, for starters...

If you are e.g. at a school which has several of these projectors issued to individual teachers, organise to swap the bulbs over between both your units and see which, if either of them, still work afterwards. If theirs was originally working, and after the swap, both are dead, you've got a dead bulb AND something else wrong with the projector, POSSIBLY but not necessarily that PCB. If yours then works but theirs doesn't, it's the bulb. And if there's no change, then both bulbs are good but your projector is toast.

And if it turns out that it's a projector fault, unless either you or an in-house tech can investigate and do the fix either for free or very cheaply, it's probably not worth getting it repaired. These models are really quite old and under-spec these days, and you can replace the entire thing with a brand new model of similar specification - with a working bulb installed! - than it would cost you to buy a single replacement bulb for the NEC.

NEC VT470... | Answered on Jan 08, 2014


check that the cooling fan is operating correctly and the air flow is not been blocked off

NEC VT470... | Answered on Jun 22, 2013


Sounds like you lamp ballast has gone bad. I good way to verify this is, when you press power on the projector look inside the lens. If you see a small amount of light, then the ballast is good, and the lamp is bad. If there is no light then chances are the ballast is bad.

NEC VT470... | Answered on Nov 05, 2012


According to the manual, yes . . .probably gone past the recommended hours of lamp use. Press the OFF or the HELP button on the remote for 10 sec, this will reset the lamp hours value and allow the unit to come on. If it don't, NEC will tell you that it has to be sent to a repair center.

NEC VT470... | Answered on Jun 06, 2011


steady orange means projector in standby mode
red light 6 times is a lamp error.
either the lamp is old and wont start up or the ballast power pcb is not working.
can you hear the sparking of the high voltage trying to strike the lamp.
if you can then the lamp may be dodgy.
can you borrow one to test it out

NEC VT470... | Answered on Mar 03, 2011


If you are facing the front of the lens, the filter is on the left side on the back. Pull it up and clean or replace. I use a can of air to clean. Replace in projector. You will need to clear the clean filer hours in the menu for the message to disappear.

NEC VT470... | Answered on Nov 22, 2010


If you are using the vga input connection please take a look at all the pins and make sure none are bent this could be the reason you are missing one of the primary colors. If not check your cable pins.

NEC VT470... | Answered on Jun 05, 2010


Dear Triwestav,
Since projector works with VT70LP, Therefore, the new lamp (VT75LP) which you have purchased is may be faulty... First ensure that new VT75LP is working well with another same type of projector....
99% that new lamp (VT75LP) is faulty, So if possible, replace the same with vendor and see result...

NEC VT470... | Answered on May 01, 2010


If you replaced the lamp already, chances are the ballast is defective. When you power on the projector with the power button you should see a flicker of light in the lens, or an electrical sound. If you don't you ballast is bad.

NEC VT470... | Answered on Apr 21, 2010


normally there is a description in the user's manual for the alignment (convergence) of this machine.

NEC VT470... | Answered on Mar 08, 2010


don't clean with compressed air, you will contaminate the air you breathe. I just bought a small ShopVac with an 18-foot hose to clean exactly what you're describing

NEC VT470... | Answered on Jul 24, 2009


in layer some add text a' clean filter

NEC VT470... | Answered on Jan 27, 2009

Not finding what you are looking for?
NEC VT470 Multimedia Projector Logo

39 questions posted

Ask a Question

Usually answered in minutes!

Top NEC Office Equipment & Supplies Experts

jasbo
jasbo

Level 3 Expert

2239 Answers

The Knight
The Knight

Level 3 Expert

76204 Answers

Ekse

Level 3 Expert

13434 Answers

Are you a NEC Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

NEC Office Equipment & Supplies

  • NEC Office Equipment & Supplies

Most Popular Question

nec vt470 lamp not come replace lamp

  • Office Equipment & Supplies
Loading...