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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Re: Monitor Constantly Pulses Between Black and Light...

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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Re: Monitor Constantly Pulses Between Black and Light...

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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Re: Monitor Constantly Pulses Between Black and Light...

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

Re: Monitor Constantly Pulses Between Black and Light...

Contact Dell.

Posted on Jul 04, 2007

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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:
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:
Failed TV and Monitors:

Learn about bad caps:

Capacitors kit: he can make you a set of caps for you.

Or 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

Describe your Dell E173FP 17" LCD Monitor Problem The monitor seems to be turning itself repeatedly on and off. No picture is ever seen, the screen stays black with a slight flicker.

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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1 Answer

Black screen with pulsing flickers of light

More likely to be capacitors failure in the power supply, worst case will be the lamps. You need to open it up and inspect the caps first, look for cap with buliging top/seal, see example of failed VIEWSONIC monitors due to bad caps (903b may be the sam as 902b):
Post back what you find so we can guide you further.

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When I turn my computer on the monitor constantly flickers on and off. After about an hour this stops the the screen goes black about five times, but after that it works fine?

You need to download the latest graphices drivers and get the update for the BIOS.
If the screen flickers in the BIOS screen as well that means the sys has to be repaired for the screen.

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#1 Connect monitor to another system, make sure the issue is the Monitor, not the video card.
#2 Try a different VGA or DVI cable
If the issue is isolated to the monitor, it is cheaper to replace it than to repair it (Refurb 17" LCDs are $69 on Dell's Outlet

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firstly stop turning it off and on because you will blow something else like a power board then it will be a big paper weight.
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if you can see everything then you have a broken backlight or problem with your backlight and connections.
they cost approx £15 and a little labour, its not a big job. you may be able to do it yourself if you can get hold of a service manual.

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1 Answer

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OJ I am fairly sure that the Power Supply is failing, try replacing ALL Electrolytic Capacitors in the Power Supply section that often "Fixes" any problems. Oh use Higer Temperature and quality ones, when doing it..

Jul 02, 2007 | Dell E173FP 17" LCD Monitor

1 Answer

Dell 17inch LCD Display - Blank

Hi, My name is Todd and I'm a customer advocate at Dell's corporate headquarters. My team helps customers via blogs, forums, and other tech sites online. You said the monitor is 2 years old. Do you have the original order number still? Depending on how you purchased the monitor it may have up to a 3 year manufacturer warranty and I may be able to replace it if it is within that warranty period. Please email me at if you can locate the order number and I'll be glad to see if its still under the manufacturer warranty. Include my first name (Todd) in the subject line of the email so it can quickly be routed through to me, and include the order or customer number if you have it. Thank you, Todd Customer Advocate Dell, Inc.

Apr 25, 2007 | Dell E173FP 17" LCD Monitor

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