Question about Dell UltraSharp 1905FP 19" LCD Monitor

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Monitor revives only after cycling the power many times

At boot-up, the black light of the monitor appeared to come on and the LED power light is green. No images would be displayed and the front panel controls would be frozen. I unplugged and plugged in and then the monitor functioned as normal. The problem got worse. I had to unplug and plug in several times before the monitor would function normally. Later, I discovered that I could unplug the monitor from the PC and allow the test pattern to float about the screen for several minutes before reconnecting. This procedured seemed to substitute for the cycling of the power, i.e., after serveral minutes of the test pattern, I could connect the monitor to the PC and it would function normally. The problem is getting much worse. Instead of a few minutes of the test pattern, I now must leave the test pattern on the screen for hours before reconnecting. If I am premature, the front panel freezes and the screen is blank, although it appears to be back lit. I have tested the monitor on another PC and it manifests the same problem. By cycling the power, or by using the test pattern, an image is displayed on the screen. It seems this must happen to "warm up" the monitor in some way. Some threshhold is crossed and then the monitor can opperate perfectly normally. What's wrong and how do I fix? Thanks.

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Re: Monitor revives only after cycling the power many...

Unscrew 4 screws on the back side. Place the monitor with the front up and open it along the upper seam. Turn it again and lift the back cover. Shift the inner case "up" and take the button holding plate out - it is being held only by a tape. Inspect it and clean it. You might have to replace the condensers and/or switches on it.

This might solve the problem, but there may be other causes as well.

Good luck!

Posted on Feb 24, 2009

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