Question about HP Compaq iPAQ MP4800 Multimedia Projector

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Greenish display My MP4800 has a greenish tint to the display no matter what is being projected. I tried all the different connections, S-video, DMI to VGA, VGA to VGA and tried to different VGA cables. I also went into the Color options & tried to tweak those at no success. The lamp has been replaced as well. I'm out of options. Can you help?

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  • yusuft Mar 11, 2009

    The projector only shows green. It is fine before it is connected to a laptop but the moment it gets connected it turns green

  • Anonymous Mar 20, 2014

    Graphics accelertors says there is no option for tv connection. surely there is a way to connect.

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Had the same problem. Opened the cover and find out that when I press the part above the lump the display become normal. Some loosed connector was my first thought. But, after a while looking and pressing around found out that the cover of the lamp was not placed properly and one corner side of the lamp cover was displaced. Opened it, returned it back to fit properly and the green display is gone. Hope that will not appear again and that is the same "problem" with yours.

Posted on Jul 21, 2009

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My TV picture has a greenish tint.




The first thing to check is the cables connected at the back of the TV.

Check cable connection, and try using a different cable, video signal is often coded in separate colors signal, and a bad cable can cause a green picture when red or magenta (depending on type of signal) are out.

A faulty receiver or DVD player can also send a bad output. Try connecting different devices to TV.

If the cables and receiver are OK there are also internal faults that can cause the same effect.
The fault depends mainly on the model and type of the TV set.

On all TVs a faulty input/output can cause greenish picture.

On all digital TVs the signal is also elaborated on different color channels . Video circuits are often located on digital board.
A fault on digital video processing can cause a green picture.

If you have a rear projection CRT based technology, one of the three CRT may be faulty, or the power board supplying the CRT (red in your case) may have blown.
In that case you will get a greenish picture.

If instead you have a CRT TV, a greenish picture means that the red gun inside the cathode ray tube is not working. The CRT itself must be replaced.

Generally, when the problem is not the video cable , or the connected device, the TV must be inspected and repaired by a technician.

If you have a new digital TV, as an LCD, Plasma, or any non CRT based technology, the problem is usually caused by cables, input output, or connected devices.

Check the cables thoroughly, if that is not the problem, call manufacturer to find the nearest repair service location.

on Oct 23, 2009 | Vizio L32 32 in. LCD HDTV

1 Answer

Video is taking on a red tint which is getting worse over time


check the cable connections. look at different inputs. VGA and Component cables have the colors split, so if it's turning red, green, or blue; it's likely a cable or connector.

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1 Answer

I try and hook my toshiba pc to a tv or projector


Lots of people are doing this and part depends on what your home theatre has to offer in the way of connections.

For sound most use the LINE OUT on a computer or laptop and connect that to a suitable input on the receiver using a 3.5mm to stereo phono lead.

If you are lucky enough to have an OPTICAL sound out on your computer and one on the home system that would be a better option.

For the video side again it depends on what your computer has to offer

If it has DVI and your TV or home system has DMI then that is the very best option. Remember to lower the resolution on the computer first and to check and of your graphics card options for dual display. A DVI to HDMI lead is needed for that

NVIDIA graphics cards seem to work best in this area.

If you have a VGA connector on your TV that is another great option and you would only need a VGA lead.

Some cards and laptops have S-VIDEO out. Lots of TV's and home systems have these and the display is quite reasonable. If using S-video connections use a GOOD quality cable.

Some people can only obtain a black and white picture so check your graphics card did not come with any special adaptor.

Another method is composite video Even that is not always 100%

Some laptops need a special S-video adaptor which is just a short little cable to properly enable the S-video and convert S-video to composite. That is probably the worst way to do it.

Using a VGA to component lead is also an option but results vary wildly from no picture to quite good. A lot depends on the quality of the lead once again.

I use the optical sound and DMI lead to power a 50" Sony with great sound and picture

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1 Answer

Color is a problem. Screen picture has greenish


well it seems you have an issue with one of your video boards, it could be that the Analog Video Board (the one with the inputs and outputs) is partially damaged, but it can also be your Digital Video Board, which is the one that projects the image

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This is what you're going to do, Turn on the Tv and go to the service manual, if the green tint is still there, you have a defective dmd board, but if it's no there, then you have an issue with your video board

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Connect a different monitor to your computer, if it still displays the same fault the the problem is the video card and you need a replacement.

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Looks like you need to purchase a new monitor. If it's too worn out then it's the outcome. I also had the same problem before and I ended up buying a new one. You should not experience that thing if it's new.

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MAYBE LOOSE CONNECTION--CAN'T PICTURE YOU PROBLEM--WHAT'S THE CHASSIS #?? TUNICA

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