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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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.
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!
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.
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.
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.
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.
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.
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,.