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Question about Dell UltraSharp 2407WFP 24" LCD Monitor

2 Answers

Dell 2407 a04 Turns on (for 2 seconds) then off

The problem is basically when I turn the monitor on, it powers up, the screen comes on perfectly (full resolution, brightness etc) for about 1-2 seconds and then the screen shuts off. It's just the screen itself that shuts off off, the row of LEDs stays on, so it's still drawing power. Any ideas/solutions would be really helpful. Thanks!

Posted by Yook on

  • 1 more comment 
  • Yook Sep 08, 2007

    It's not anything like that, it's the monitor itself. Even when the monitor isn't hooked up to a PC (The monitors menu screens etc etc) at all, same thing as above applies.

  • Yook Sep 15, 2007

    This turned out to be a backlight inverter problem. I managed to buy a new one from a broken 2405 and with a bit of hacking, got it to fit in where the old one was. The monitor works perfectly now!

  • DRay9911 Feb 06, 2008

    I am not sure if this site is still active, but I came here through a
    google search. I have had a 2407WFP for a year (received it the
    first week of 2007) and I get home from work yesterday and my monitor
    goes dark. The power light is still on and I switched back and
    forth between the VGA and DVI cables. If I turn off the monitor
    and then turn it back on, I will see my desktop for a second or two and
    then it goes off again. Because I received this monitor as a
    gift, I do not have any purchase information so Dell lack of Customer
    Service was no help at all. It's probably out of warranty anyway
    (I doubt the company I received it from purchased an extended
    warranty), which is fine. It's a damn shame Dell's Customer
    Service sucks so hard.


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I found bluegreennash's suggestion when my LG L222WT screen kept blanking out. It took a few try's of shutting down the screen, changing the resolution while it did open for a few seconds then unplugging the monitor and shutting down the mac. I plugged in the monitor then rebooted and changed the resolution back from 640x480 and, touch simulated wood, it seems to be holding its own. It didn't work when I only rebooted, it seemed to need the monitor unplugged as well.

Posted on Jun 03, 2008


Gareth Cockram

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Your pc may be set to a resolution that is out of range for the monitor. Boot into "Safe mode" reset the Display settings to 640 x 480. reboot into normal mode then change the screen settings to your desired resolution.

Posted on Sep 07, 2007

  • Gareth Cockram
    Gareth Cockram Sep 15, 2007

    possibly it's a backlight falure, this can be a real problem with LCD screens as they require a "backlight" to shine throught the display matrix, it is possible that teh system that energises these backlights has failed,

    you can check this as if you look closely you will still be able to see changes in the screen when things are happening, it's just that there is no light to illuminate the picture



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