Question about LG Flatron L1710M 17" LCD Monitor

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HI. I had the same problem with mine. It would flash the screen on for a split second and then turn black, the whole time the power light remained green. Upon opening up the case, I pulled the combo power supply board/inverter board out for inspection. I noticed one of the capacitors had a bulge on top indicating it was bad. It was the the 680uf 25v capacitor. I desoldered it, and soldered in the new one. After hooking everything back up, bingo!! Monitor now works perfectly. I couldn't find an exact match to the capacitance locally, but I had a 1000uf 35v cap in my utility box. It worked fine as a replacement. You can usually go within 30 percent of tolerance and be alright. Just don't go under on capacitance or voltage. I hope this helps.

Posted on Mar 31, 2009

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Backlight is bad and needs replacing! When the screen is black with no image. Most of the time it is the inverter, when the screen shows an image it is the backlight, if power light flickers it could be a combination inverter board and backlight!

Posted on Nov 27, 2007

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The moniter blacked out, blue light is saying the moniter is still on, but screen looks like there is no power. When you turn on the moniter, the screen shows up for a few seconds, then blacks out again!...

Unplug power. Unplug VGA cable. Remove back of monitor. (four small Philips headed screws along the bottom rear. Remove screws attaching Monitor to it's base. Carefully, lean the screen away from back of case. Gently unplug 25 pin cable from the screen.
Connect AC power.
Screen should power on Gray to White. Ble light comes on Blue.Flickers then changes to Amber.
Reconnect VGA cable. Monitor should work.
Close up the monitor in reverse order to opening it.
If these steps don't solve your monitor, consider replacing as cost of repairs may shock you.

Sep 09, 2010 | Proview PL926WBi 19" LCD Monitor

1 Answer

The montier turns on then turns right off

When a monitor display image for a second and then goes to black screen... there are possible reasons why this problem occur..

1. You need to check if the high voltage ballast transformer of your backlight inverter is about to be burned... the transformer is overheating..that's why you experience the monitor working for a couple of seconds and then it will shut off until the transformer cool down again and then it will be ready to work again...

2. Check also the backlight inverter if it is busted...the backlight inverter is the light source responsible for the image display you seen on your screen. If this are busted then all that you will be seeing is black screen

3. You need to check the power supply section for possible loose connections and possible blown and bad capacitors..

the ballast transformer has direct effect on power supply section.. when there is overheating transformer,,, the supply current from the power supply section becomes unstable.. and will not be able to supply the remaining good working ballast transformer.

In case you do not know, the ballast transformer generates high voltage for the backlight inverter to work....

Please be advise that if you don't have the knowledge, the proper skills and the right tools to open the back cover of your monitor and replace its part...don't risk it...

Otherwise, bring your unit to a credible technician and avail of warranty if there is any.....

Much appreciated if you rate this help...thanks...

May 25, 2010 | HP f2105 21" LCD Monitor

1 Answer

I have a samsung Syncmaster 2343 and I can turn it on just fine and my computer recognizes that it's hooked to a moniter but the moniter shows the screen for a few seconds and then it all goes black. It's...

If your up to opening the monitor it would do you well to look. It sounds close to what I experienced.Refer to Problems with Samsung SyncMaster 2053bw for info on opening.

Nov 11, 2009 | Computer Monitors

3 Answers

Screen goes black, but power light is on (not blinking)

The problem is not with your screen. Its the problem of Video Card of your system which is unable to send Video Signals to the Screen.

Apr 23, 2009 | Daewoo L700C 17" Flat Panel LCD Monitor

1 Answer

Screen black

if monitor light is on, check the connecting data cable if it is ok then consult a technician.

Oct 28, 2008 | Computer Monitors

1 Answer

Monitor goes blank less than a second after turning on.

the moniter may be having  some technical errors   maybe the IC's has got corrupt 

you need to call the seller of the moniter

Sep 06, 2008 | BenQ FP71G 17" LCD Monitor

1 Answer

My Acer LCD AL1711 went off after seconds of turning on.

This monitor has "back lights" that are essentially like flourescent lights. These are high voltage lights and can easily fail. since you are getting some light initially, I would suspect a defective part that heats up a bit right away and then fails. I would try to replace the entire backlight board. This is the small board on the side (usually).

Mar 27, 2008 | Acer AL1711BM (Black) 17" LCD Monitor

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Monitor wont turn on, green power light on

Hi you can inspect that what's wrong with your monitors. After you turned it on and the screen went black, you have to check that if you can see the image on the screen or not 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 or any image, there will be a minor problem. This is because of the lamps inside screen. Some of them were broken and it is very easy to replace. If you cannot see anything on the screen, there'll be 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 burn 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. Hope this help!! If anything I can help you with, feel free to let me know.
Thank you,

Mar 08, 2008 | IBM ThinkVision L170 17" LCD Monitor

1 Answer

Monitor goes blank less than a second after turning on.

I start my computer and turn it on, and everything looks fine for about 1/4 of a second and then it goes black while leaving the power light green. I can only see the screen again after turning it off and on, but that's only for another 1/4 second. What's up?
I got my rosewill flatscreen as a hand me down from my father. I've had it for several years now. Was working fine until a month ago. When I turn the computer on the screen goes black after 1/4 of a saecond. I have to turn it off and on anywhere from 10 to 20 times before it stays on. I have checked all plugs to the computer and outlets. I have absolutely no idea whats causing this.

Dec 28, 2007 | Rosewill R700J 17" Flat Panel LCD Monitor

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