Question about Mitsubishi SL4SU ColorView Multimedia Projector

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Problem with mitsubishi sl4u projector

I am trying to get my computer to work with the projector. i tried using the function keys and that did not work. i also tried going into the settings and used it as a secondary monitor. when i do that, my desktop background shows up on the laptop but when i open up a program on my laptop it does not show up on the projector. it continues to show the background picture.

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Make your pc or laptop start first and then the projector.

Posted on Mar 18, 2008

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The polarized glass for the Green LCD panel has gone bad, and require to be replaced.

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Have a mitsubishi XL6600u projector .....screen is yellow and have replaced bulb still yellow


Could be one of two problems. How old is the machine? If one of your LCD filters inside the machine has burned up it will show yellow. Common on SL4U. It starts with a yellow circle. If not that then most likely a bad VGA cable. If you have it hooked up that way.

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I have a hp compaq laptop. i used properly before installing new operating system xp service 2 . but don't use my laptop and my epson projector because automatically don,t display my laptop and...


PC Projector first and Computer next. Usually if the projector powered on after computer you need to use Function keys on laptop normally Function and F4 buttons when pressed simultaneously the computer screen projected through projector. Function keys are identified by green lettering on them.
If you power on projector first and then the computer while they are connected through cable this problem may not arise. Try this and and also Function and F4. This usually fixes the problem. Let us know if you still have problem! good luck!

Sep 10, 2011 | Computers & Internet

1 Answer

I am told the light is very dim. Is this a sign the lamp is going bad?


From the first moment it is used, the lamp in a projector is losing lumens (a measure of light). Most projectors' lamps are good for 1500 to 2000 hours of use. Even at the halfway point, a significant dimming can be noticed.

If you do not have many hours on the lamp, you may have a defective lamp and should seek some sort of compensation from Mitsubishi or whatever retailer you purchased the projector.

Mar 09, 2011 | Mitsubishi VLT-XL8LP Projector Lamp for...

1 Answer

Hey i just got a mitsubishi sl25u i have hooked it to my pc second screen cable the computer is running windows 7 and has poped up as my second screen it know what it is but i get no signal displayed on my...


A couple things to try. First connect a second monitor to the output of the computer to make sure that you have a valid signal coming out of the screen 2 output. If you do then connect the projector and make sure that you have selected the computer input usually VGA1 or VGA2 as your input signal. If the monitor doesn't work then you need to hit the function key on the top of the keyboard to turn on the second screen output.

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1 Answer

We have a Sanyo ProxtraX multiverse projector. We have used it a number of times but recently, it will not see the laptop. It turns on but cannot find the laptop signal. I have tried different laptops...


Have you tried the "Function and F key" trick? On most laptops it's the F6 key but on your unit look for a picture/graphic of a computer screen...or maybe text saying, "LCD/Monitor". To activate this function you must press and hold down the blue "function" key and also press the F6.

The F6 key has three states...1 - only laptop screen, 2 - only external monitor (video projector), 3 - both the laptop screen and the externally connected monitor and/or video projector.

Nov 08, 2010 | Office Equipment & Supplies

2 Answers

Projector does not display laptop screen


Many laptop computers do not automatically turn on their external
video port when a projector is connected. On many laptops, the activation function key is labeled with an icon or the text CRT/LCD.

Try the Function Key with the Icon of a monitor to enable the external video port.

If that does work, look at the settings on the projector using the buttons on the top.

Check the "Default Source"

Default Source toggles among Computer 1 analog, Computer 1 digital, Computer 2, and Video. This determines which source the projector checks first for active video during power-up. Highlight Default Source and click the left or right mouse button to toggle
among the options.

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Computer used to work with projector, and now doesn't?


Have you tried pressing Fn F5? On my system (HP), by computer monitor goes dark when I connect the projector. Pressing (Function) FN F5 toggles the video between Computer Monitor, Projector, or Both.
Check the function settings for your computer. On my Compaq laptop at home, the video function is F4, so there may be different settings for your computer.
Good luck!

Jan 10, 2009 | Office Equipment & Supplies

1 Answer

Sl4u Projector


It could be that one of the fans has broken you will be able to hear them because there are 5 in there. if you are under warantee send it back if you are technically minded take it apart and watch which fan doesnt start then order from mits or from a local supplier,.

Sep 16, 2008 | Mitsubishi SL4SU ColorView Multimedia...

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