Question about Epson PowerLite 71c Multimedia Projector

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Yellow haze across top of screen

There is a yellow haze across top of screen

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Hi there

This is probably a LCD that needs replacement , no easy fixes unfortunately !

Best would be to get it checked out by a Pro.

Posted on Sep 26, 2008

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Haze


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.

May 11, 2012 | NEC VT470 Multimedia Projector

1 Answer

Red haze at bottom of screen


Shut down the projector and allow time to cool before the lamp is taken out to be examined for any dis-coloration. If so the lamp needs to be replaced, try to test using a leased lamp to confirm Also check for shift in the alignment of the lamp settings and also the Lamp alignment.

Dec 15, 2011 | Epson PowerLite Home Cinema 8500UB...

1 Answer

Our ViewSonic PJ558 is emitting yellow light. The whole display is in yellow already. Please help.


If the yellow is perfectly uniform across the whole screen, then a processor problem may be present.
If the lamp is very old then this could be a problem.
Otherwise an optical part has deteriated due to overheating

Jul 26, 2011 | ViewSonic PJ558D DLP Projector

1 Answer

I have red and blue color tones to one side of my screen. And a slight blue haze at the top of the screen.


You have delamination/polarizar burn requiring factory authorized service.

Good Luck

Aug 11, 2010 | NEC MT1075 Multimedia Projector

1 Answer

Blue haze in top right of screen from NEC mt1075 projector


the light filter on the blue lcd panel is fried due to excessive dust and heat. clean out the projector with canned air. unfortunately, you cannot buy individual parts of the optical engine- you'll have to replace the whole thing. or live with it.

Nov 17, 2009 | NEC MT1075 Multimedia Projector

2 Answers

Display is giving a yellow haze (ring) when projector on and colours not crisp. Have replaced the bulb with the same effect on new bulb.


the light filter on the blue lcd panel is fried due to excessive heat and dust. unfortunately, you'll have to purchase an entire optical engine.

Oct 30, 2009 | Sanyo PLC-SW30 Multimedia Projector

1 Answer

Images has a blue color across the center


Wow, 3 in a row. As described on 2 other projector issues this is very similar to those others. I'll repeat the info here.

I assume this is an LCD. I don't remember the s4 being a DLP projector.

This sounds like the LCD panel used for the blue color has gone out. The image is made up of red, green and blue images layered upon the screen. If the blue panel has gone out then there is nothing filtering out the red light in the image.

It looks like yours has just a secone of the panel dying or comming loose from it's connector.

It could be a simple open and reconnect fix. I personally have never opened a projector, so I'm not going to walk you through it as I do not know how hard it would be to tinker with. It should eb a cheap fix for a true repair man though.

Mar 14, 2009 | Epson PowerLite® S4 LCD Projector

1 Answer

Pink haze top left hand corner of screen


loose integrator lens/ readjustment is possible, or the lcd for green is contaminated( red + blue mixed gives pink)

Jul 14, 2008 | Sanyo PLC XU35 Multimedia Projector

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