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Can you reboot your computer with the projector connected and turned on? If the issue persists, check the input option of the projector to select PC. Use the menu button on the projector to turn on the settings. You can try all the input sources to see which one brings on the pictures. You can also check the display settings of your computer to see whether it is disabling the second monitor. Another thing to check is the cable. Sometimes there is some broken pin which might be shorter than others or in there with an angle.
For whichever input the monitor is currently set to (i.e. Input 1, HDMI 2, etc.) it is telling you that the signal it is receiving is unusable. The question first is the monitor set to the input you truly wish to use?
If it is, then check the cabling between the monitor and the source device (cable/satellite box, game box, etc.) If you believe it the source is working, try swapping the cable or using a different input.
If that fails, try hooking up the source to another monitor and seeing if it works there. If you have a long cable run, try higher quality cables, the video signal can degrade over long runs (> 25').
It sounds like the monitor is receive *a* signal, just not one with enough data to be useable. Probably a bad cable.
I presume you have burned in an image from some source? Plasmas are very sensitive to burning in so be careful when hooking up a device that doesn't have pixel shift or dimming. Think about how a DVD player splash screen looks.
You will need some sort of source device that can give you WHITE and BLACK. If you have a VGA input on your plasma (more than likely) hook up a computer to it using the PC input and bring up PowerPoint. Bring up just a blank new presentation. Hit the F5 button or click on the tripod screen button. This will bring up the full display screen, which should be white. If not hit the "W" key on the keyboard. If the burned image shows up as a gray or black image, leave it on for a few minutes and then check it periodically.
f you don't see a burned image when in WHITE mode, hit the "B" key. This will bring up a BLACK screen. Check your screen again. Keep doing ot until the screen is clean. By the way, this will not completely remove all burned in images.
Assuming the monitor is powered (if unsure, check the that power cord is connected to a live 120 volt source and the other end is connected to the monitor), check the data (analog VGA or DVI) cable between the monitor and the computer. Make sure the connectors are firmly seated in the respective jacks, and held in place with the retaining screws where provided.
If all four connections (power in and out and the data in and out) are satisfactory, check your monitor's input "source" selection. This may be selectable via dedicated "Source" button on the monitor or from the monitor's "Menu".
When changing the source input types with the button, it will usually take a couple of seconds before an image will display, so allow enough time for the monitor to respond to the change. If changing via menu selection, it may not change until saved or exiting.
If the monitor refuses to display, it may be an issue with your video card. In this case you could try swapping the video card or the monitor to determine which is the culprit.
If it like my monitor, same hookups as yours, then when you want to use the hdmi port you need to disconnect the dvi cable. The monitor cannot read from hdmi & dvi when both are connected, Try this & see if your PS3 works. Good luck.
Video card in the monitor sounds to have failed. It dosn't take alot to short them out these days.
Try the analogue port (make sure everything is off when you connect it up) and then see if you get to access it from the menu.
Sometimes these monitors are a little fussy about selecting things that it didn't detect as valid when it powered up.
By powering up I mean from when you plugged power into it, not just turning it on with the power button.
It would need to be unplugged from the wall for about 5 mins to drain out the power that is stored in the main filter capacitor.
Computer seems fine,
Cable changed. but still the same.
This is to expected, the monitor mounted controls are directed to monitor not part of the data input.
Thus suggests a board failure in the Monitor.
Just to prove the point if you have the monitor driver installed delete it and run as generic monitor.
If things change reinstall the dedicated driver
Though I suspect this is a monitor failure not computer related.