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You need to power cycle your LCD moniter, and then disconnect the display cable of your LCD from your system and see if yor LCD is doing the self test, if that is passing the self test that means there is nothing wrong with your LCD you need to check your system espeacially display adaptor and the drivers, you can also cross check if you have any other monuiter at home.
If your LCD moniter does not pass the self test then it means it has crashed you need to get it repaired or get the new one.
Worst case will be lamp assemblies failure. It will expensive gambling to DIY repair unless you have Inverter tester and lamp tester to verify which assemblies went out..
woliphint, Did you try Dell to see if they can do a swapout? You send them your's +$40-$90 and they send you a refurbished same model with new CCF tubes+power supply/inverter? A lot of LCD/FPD displays have been subject to having their SMPS's fail due to poor quality electrolytic filter capacitors that can't endure the thermal stress inside the display. Nearly all brands are affected, not just Dell. See what you get when you search web for 'swollen caps' or 'bad caps in lcd's' or 'lcd repairs' or 'monitor re-capping' or similar type of search. You should always state age or approximate usage hours of the monitor when posting to fixya. We don't know when a 2405FPW was produced and sold. As long as you haven't cracked, shattered, or abused the LCD panel you should be able to get it swapped and or repaired. I'm louie12fix on fixya or [email protected]
Bye for now.
The symptom you describe is typical of a thermal problem in the display. It might be in the LCD panel itself, in which case the only repair is to replace the display. It could also be in a component on the main board, and spray component cooler can be used to selectively chill parts to see if it has any effect. Even then, though, it's usually large-scale integrated circuits on these board that have go bad. Even if you can find a source for the part, changing it normally requires tools and techniques beyond almost every shop. Even the manufacturers "repair" these by simply replacing the entire board.
Sad to say, if this isn't covered by some kind of repair warranty, replacement might be your only option.
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