Question about Dell E173FP 17" LCD Monitor

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Monitor Constantly Pulses Between Black and Light Black, But Won't Display Images

Help. My Dell monitor repeatedly pulses - briefly flickers - but not long enough to see an image on the screen, while the power button just blinks green. The pulsing is constant, maybe once per second, over and over. The monitor behaves like this even when disconnected from the computer. The computer is fine and works with other monitors. In the past, I've heard a random "pop" from the monitor every so often, but never had any problems. Any advice would be greatly appreciated. Thanks

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  • Anonymous Dec 16, 2007

    I have the same exact problem.

  • ikan Dec 18, 2007

    Errr! Same exact problem. I have a hammer and I'm ready to use it!!

  • Anonymous Dec 29, 2007

    I just turn the monitor off with the switch below the screen and keep trying until it goes away.

  • Anonymous Jan 01, 2008

    EXACTLY THE SAME PROBLEM! F**K DELL!!

  • Anonymous Feb 28, 2008

    The screen is black and blinks constantly

  • Anonymous Dec 06, 2008

    monitor went off during power outage, when i powered my cpu back up, monitor wont come on. it flickers constanly but no image on screen at all. i put an old (and really big) monitor on my cpu and it works fine. i have a dell 17" flatsceen ~

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Check inverter board for bad 2sc5707 drivers...could be shorted.
Also check driver transformers for over heating symptoms...they could also be shorted.

Posted on Feb 12, 2008

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I had this problem as well. To temporarily solve it, I would just unplug the power cable from the back of the monitor for about 10 seconds. When I plug it back in it would work normal, until the next startup...

Posted on Dec 11, 2008

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This is the way how to examine where the problem is. You have to check that you can see the image on screen by shining a flashlight into the screen, not directly but find the best angle to the screen and take a look very closely. If you can see the icons (Power on both cpu and monitor), there will be a minor problem. Like me, I can see window image using flashlight and check lamps inside. Some of them were broken. It can be easily replaced. If you cannot see any icon on the screen. I would say that there are some problems with inverter board. If you have soldering tool and want to fix it by yourself, check the caps first. It may cause this problem. Some caps might show leaking or dark spot on the board because of too high temp. If you don't have soldering tool, you better go get a technician to do so.

Posted on Feb 13, 2008

Contact Dell.

Posted on Jul 04, 2007

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1 Answer

Screen black; white light pulses. Apple "genius"


It can be the power supply or the backlight inverter, worst case will be the lamp assembly.
Not easy to repair due to hard to get parts.
If you are going to DIY and already try the monitor with another PC, and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), 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 monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Please leave rating if it helps.

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1 Answer

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Sounds like the monitor is cycling power.
Try plugging the monitor into a different power socket. Try not to use the same power bar as your computer

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