Samsung Syncmaster 2240W - Display shows white to grey banding

When you power on the display with no input connected you should get a message saying check signal cable. instead it alternated between a grey screen and a screen with gradient of white to black with the white at the top and black at the bottom.

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what does it do when you connect it to a video source?

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sorry should have stated it does the same when a video source is connected via vga or dvi.

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well took the display apart to look for damaged components on the driver board or the power supply and everything looked good. disconnected and reseated all the cables for the panel display board and power supply. found no damaged to any components so was a bit unsure what to do next. put it all back together and thought I would test it again and sure enough it came up with check signal cable. I hooked up a computer and it was all working and back to normal. :)

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