Question about Dell E172FP 17" LCD Flat Panel Monitor

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Monitors comes on for a few seconds then goes black. the only way is to turn it on and off but still only stays on for a couple for seconds

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  • Dell Master
  • 2,404 Answers

I think the power board might be going bad in there. Hook up a different good working monitor to the computer and see what happenss.

If the monitor still turns off after a few seconds then you know its the video card acting up. If the monitor stays on then you know its the original monitor that is bad for sure.


Posted on Jul 03, 2009

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  • Master
  • 453 Answers

Hello,

The problem seems to be with the power cord. Try changing the power cord and connect it to a different socket. If this does not help try changing the power chord.This will help.
If this still does not work then try contacting the monitor manufacturer because montors usually come with a 5 year warranty.
Good luck!

Posted on Jul 03, 2009

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Posted on Jan 02, 2017

  • 1684 Answers

SOURCE: My monitor will only stay on for a few second and

Hello,

You have a monitor with a common problem. After a few years some LCD monitorswill blow a power supply. The problem is caused by parts calledcapacitors overheating in the confined space of he monitor. If you aregood at electronics repair/soldering you can usually fix he problem. Check out a few pictures on my web site www.ccl-la.com/badcaps.htmYou can take the back cover off your monitor and look for the badparts, replace any that look like the pictues and your monitor shouldwork fine. The capacitors do need to be installed with the correct +and - connections, note the stripe on the old one and insert the newone the same way. If you don't want to try the repair yourself we offera repair service for $35 plus shipping. I hope this helps, if so pleaserate my solution.

Buddy
Corporate Computer
Over 21 years of computer and printer support/repair

Posted on Jun 26, 2009

leusnerdus
  • 54 Answers

SOURCE: My monitor goes black after a while. I can see

That is just a backlight lamp problem. It is necessary to service it. take it to a service center or give me more information to say to you how to do it on your own.

Posted on Apr 19, 2010

SOURCE: I have a Dell monitor model #1901FP when my

The solution I am about to describe refers to a backlight problem, which is most common in Dell 15,17 & 19" monitors. The symptoms are as you describe:

  • You power on the monitor, the green on/off switch illuminates and the display works for approx 1-2 seconds and then goes blank.
  • The green on/off switch stays illuminated but the screen remains blank
  • If you shine a torch into the LCD matrix you can see the display being rendered faintly
  • Switching the monitor off and then on again illuminates the display again for 1-2 seconds before going blank again
This is a backlight fault and is most likely to be caused by the failure of two of the four driver transistors used to light the lighting tubes in the LCD Matrix. This fault is easy to repair if you (or a friend) have a soldering iron and a voltmeter.

Inside the monitor there is an inverter board that acts as a power supply for the monitor and the logic necessary to control the backlights (illumination and brightness control). There are four lighting tubes, which are controlled by two lighting circuits (two lighting tubes per circuit). At the heart of the inverter board is a chip that monitors feedback from the two lighting circuits and closes the back-light circuit down if either of the lighting circuits fail, thus any component failure will exhibit the same symptoms.

The transistors which fail most often cost pence to replace (types C5706 or C5707). However, their failure in unlikely to be the cause of the problem. My first crack at fixing this fault, by replacing the transistors, resulted in them failing again within 24/48Hrs. The cause of the problem will be dry solder joints or loose connections on the high-voltage side of the circuit, usually on the backlight transformer in the effected circuit. If you re solder each of the connectors on the transformer you will save the transistors from blowing again - the transformer generates 1,400Volts for the lighting tubes and at this voltage, arcing across the a dry solder joint, will quickly destroy the transistors again.

No soldering iron? - A complete inverter board replacement is also reasonably cheap and easy repair. These are widely available.

Sorry of this is more detail than you expected but it may help others reading this article.

Posted on Nov 28, 2010

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Replacing them is simple if you know how..not so simple if you don't.
Try your local TV repair centre. It should not cost alot to have the capacitors replaced.

Hope it helps =)

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