Question about Samsung SyncMaster 740N 17" LCD Monitor

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N0 or Very little backlight on Samsung SyncMaster740 17" Monitor

When you press power botton on monitor, power light comes on and remain on but the backlight go's off after two seconds

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  • Nerijus Mazuolis May 11, 2010

    its the microchips NT68F63L problem on vga board or bad capacitors. you need to open
    monitor to solve the problem. there are more than 3 ways how to repair.
    Can you open the monitor ??

    or

    if you want there is manual how to repair samsung monitors with this
    problem you can find on ebay: Repair manual Samsung monitor 710n, 913v,
    510n and more, Item number: 220389041052.

    it shows step by step reparation process.

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  • 17 Answers

Back light is going bad. if you see a pinkish hue on the" checking signal" box on screen when it comes on. Should be white.

Posted on Jul 30, 2010

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2 Answers

My Dell 1905fp Ultrasharp was coming on intermittently for a little bit and then it would not power up at all.


You said your monitor will be on for little bit and then would not power up anymore... there are two 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 minutes and then it will shut off until the transformer cool down again and then it will be ready to work again...

2. You need to check the power supply section for possible loose connections and blown 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..The backlight inverter is the light source that is responsible for the image display of your screen...If the ballast transformer is not working or if the backlight is busted then the only thing that you will see in your screen is black....

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 24, 2010 | Dell UltraSharp 1905FP LCD Monitor

2 Answers

Samsung syncmaster 203b problem


Hello,

This is a typical symptom of a failure of the capacitors on the power supply board. When the filter capacitors go bad the power supply can not start up correctly so you get flickering or even no display. You can repair this unit by replacing the bad capacitors and a fuse on the power supply. This is an easy repair, it just requires a little soldering. Here is a lin to additional information on which capacitors need to be replace and also here is a picture of the power supply board with the capacitors and fuse circled.
http://www.ccl-la.com/catalog/product_info.php?products_id=229

9_7_2012_3_30_57_am.jpg

Apr 04, 2010 | Samsung SyncMaster 203B LCD Monitor

2 Answers

No backlight on Samsung 710N LCD Monitor


No, it is not easy to change the backlight on an LCD panel. The backlight is an integrated part of the LCD panel itself. The backlight for LCD monitors is also model and manufacturer specific, so there's no easy place to order a backlight to do it yourself. The good news is that your Samsung monitor should come standard with a 3 year warranty, so if it's less than 3 years old, you can call Samsung and they'll repair/replace it for free. If it's over 3 years old, then you may need to repalce the monitor... or pay to have it repaired.

Mar 07, 2010 | Samsung SyncMaster 710N 17 in. Flat Panel...

1 Answer

My Samsung 213T monitor went black. Power light


I will not be surprised that it will be bad capacitors, that is the first place to check, see some samples here: http://s807.photobucket.com/albums/yy352/budm/Samsung%20Syncmaster%20214T/

Jan 04, 2010 | Samsung SyncMaster 213T 21.3" LCD Monitor

1 Answer

My hp vs19e monitor has dark screen and blinking power button.


Could be the power module or the backlights (more likely backlights if the "luminance" varies)- $156 sounds a little high but not insane, but you realize cost of replacement is lower, do you not?

Aug 13, 2009 | HP vs15 15"LCD Flat Panel Monitor

1 Answer

I have just gotten the Samsung syncMasterP2570 monitor and the on button is just flashing and monitor does not come on. When I take out the Dvi or the hdmi I get the auto light flicking. I know that is to...


Your samsung monitor has a bad power mosfet connected to your backlight driver. Or if not you have a bad backlight or bad capacitor's. This problem is normal to samsung syncmaster monitor.

Jul 24, 2009 | Samsung Computer Monitors

2 Answers

Samsung monitor picture clicks off after 2-5 seconds...


Yes, It sounds like the backlight inverter circuit is shutting down. No inverter power, no backlight. On some monitors the inverter circuit will shot circuit the power power supply which makes the power light flash on some it just kills the backlight. You can usually check with a flashlight. Hold the flashlight pointed at the screen and see if you can see any of the icons or background picture. If you can then it is the backlight circuit or backlight tubes, usually the circuit.

Buddy


Jul 24, 2009 | Samsung SyncMaster 204B (Silver, Black)...

1 Answer

Vl1918 backlight replacement


this is not a driver issue. There is a hardware problem. You will have to replace the lights, or purchase a new monitor.

Please rate me.

Thanks and good luck, let me know how it turns out.

Feb 02, 2009 | Princeton Digital VL1918 Monitor

1 Answer

Princeton 19" lcd vl1918 BACKLIGHT replacement


On the bottom of your monitor or on the right side is a set of buttons one is for brightness and contrast try to reset the brightness and then contrast. If this does not work you may need a new monitor.

Jan 25, 2009 | Princeton Digital VL1918 Monitor

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