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Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed DELL monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums Post back what you see inside so we can guide you further and it will help out other people in the future also. http://en.wikipedia.org/wiki/Capacitor_plague http://www.badcaps.net
Sounds like either there is a bad connection from the computer to the monitor, or the monitor has a faulty power regulator, causing the monitor to overheat prematurely, and shut off.
Are you using it as a TV or monitor? If it's a monitor try it on another PC.
Does the same thing happen no matter what input you're using?
Is it overheating somehow?
Maybe try changing the sleep setting to 30 or 60 mins and see if there's any difference, in case there's a problem with that section. (Not that you can fix it if there is.)
Worst case scenario, the TV is faulty - if the backlight is actually going off, the picture would still be there but barely visible. But if you've just bought it there should be no problem about getting a replacement.
well as i see from your problem explanation i believe that the LED which are at the backside of your LCD screen is not working so its better to troubleshoot from that angle. good luck
You probably have a bad LCD panel back-light. Time for the repair shop. Probably not worth repair though. Unless you have warranty or extended warranty.
Could also be an inverter board ... which supplies the high voltage for the back-light.
You need to verify if it's the monitor or computer--if possible, change out the monitor with a known-good one and see if the problem still exists. If it does, then it's a problem with the video card or driver software--if it doesn't and the monitor is an LCD display, then you probably have a failing power supply or display. In an LCD monitor, there are thin, bright fluorescent tubes which give back lighting to your image. A classic symptom of the screen going dark(with the image still visible using a bright flashlight), is the power supply that feeds the tubes or the tubes themselves. If the display is not under warranty, keep "new monitor" in the back of your mind because the cost of getting the unit fixed(if it can be done) rivals the price of a new one.--Hope I was of assistance--Rick
ok , i have had this problem on bolth my dell inspiron laptops , on a 6400 and a 1525 . the 6400 had the lower left corner all dark and the 1525 was split right down the center . i fix bolth of em in a really simple way , turn on ur pc and go into windows , press the blue Fn button and the down arrow untill ur brightness from ur backlight is completely down . keep it that way with the screen on with a screen saver for about one hour then turn brightness back up but not all the way up cuz in my case the problem hapened again , but when i keep it just one click darker , boom problem fixed . from what i can figuere out is that the inverter aint powerfull enought to power the backlight and tends to over heat , so keeping the backlight a bit lower tend the keep em ok
Some searching on forums convinced me the inverter had failed. Picked one up for $65, removed the frame around the screen, removed the mounting screw for the inverter, and unplugged both ends of the old and plugged in the new. Put it back togeher and fired it up, bright again. Key here was that a remote monitor still worked which meant video card was OK. The lamp could have been bad, but apparently the life of lamps is pretty decent.
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