Question about Samsung SyncMaster 940N Flat panel Monitor

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My samsung syncmaster 940n is no longer working, the blue light is on but the monitor is blank. Is there anything i can do?

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This problem is usually caused by a failure of the power supply board controlling the back lights. Here is a link to a repair guide with disassembly and repair instructions that should help you get the monitor back up and running again.

http://www.ccl-la.com/blog/index.php/repairing-a-samsung-940n-with-a-blinking-power-light/


my samsung syncmaster 940n is no longer working, - 2_26_2012_5_47_09_pm.jpg

I hope this helps, if so please rate my solution.

BuddyMc

Posted on Feb 26, 2012

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It mite not a problem from the monitor, try and check your data receiver cable either from a computer system with another monitor.
If the response is different i.e not displaying... its a hardware problem... a vendor can check it for you

Posted on Oct 07, 2009

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When I turn on computer,monitor doesn't show anything sometimes 1,2 hours , and then finally I can see descktop on computer...All that time,monitor is trying to show picture (I can see like blinki


This is a known symptom of a failure in the power supply board. Here is a link to a repair guide that shows how to dis-assemble and the unit and then what to look for and replace on the power supply board to bring the unit back to working condition.

http://www.ccl-la.com/blog/index.php/repairing-a-samsung-940n-with-a-blinking-power-light/

And here is a picture of the power supply board that needs to repair.


2_26_2012_6_05_52_pm.jpg

I hope this helps, if so please rate my solution.

BuddyMc

Feb 22, 2012 | Samsung SyncMaster 940N Flat panel Monitor

2 Answers

Hi. I have a samsung syncmaster 940n black. After i turn on my computer the screen if just black and the blue light(where i turn the monitor on) just blinks.It worked normally yesterday.


The most common problem with the 940N units is a failure of the power supply/back light inverter board. This is easy to repair be replacing 6 capacitors on the power supply. Here is a link to a repair guide with dis-assembly instructions and what to look for and replace and the power board.
http://www.ccl-la.com/blog/index.php/repairing-a-samsung-940n-with-a-blinking-power-light/
And here is the power supply board.



2_26_2012_5_57_53_pm.jpg


I hope this helps, if so please rate my solution.

BuddyMc

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Sounds like system software needs to be replaced... re-installed. It probably got corrupted somehow since it is not rebooting properly. Use the original discs that came with the computer. Thnx

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Your problem is usually caused by a bad power supply. You should be able to do the repair yourself, if just requires replacing 6 capacitors on the power supply board. Here is a link to a repair guide that shows how to disassemble the monitor and repair the power supply board.

http://www.ccl-la.com/blog/index.php/repairing-a-samsung-940n-with-a-blinking-power-light/

And here is the a picture of the power supply board.



2_26_2012_5_52_16_pm.jpg

I hope this helps, if so please rate my solution.

BuddyMc

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It depends bad the parts are broken, this is 2007 model, you may have hard time getting replacement parts, details pictures will help.
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theo_christo, Get into my FIXYA profile and see if anything interests you or your BLACK or BLACK/BLANK screen symptom. Learn about the "flashlight" test that every "CCFL backlit lcd" monitor owner should know how to do and interpret the results of. 12fixlouie READ, READ, READ!

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I have just had this same problem. The problem mostlikely is a blown fuse on the inverter board. Mine was blown on the board and also a Capacitor (470nF/25V) was bad beside the Fuse.

I replaced both and monitor is working now again. After install the picture was a little grainy with little artifacts. In another post i found that the Power Supply board needs to be cleaned for unwanted residue. After that picture was fine again.

BEWARE that you need a soldering iron and a steady hand to replace these parts. If you are unfamiliar with soldering at all have an expert take a look at this. The Power boards uses 220v so DO NOT connect it to the Power when opened.

Starworx

9e48e23.jpg

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press the blue fn button and look for a screen on the buttons F1 through F12

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Do you have the video set to a range that this display cannot handle? Try rebooting into Safe Mode and set the resolution down to 800x600 or 1024x768 and see if it that will get you back. If so, then look up the specs of the display and set it no higher than it's max.

If it physicaly powers OFF, then you probably have a power issue.

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This is a known symptom of a failed power supply board. Here is a repair guide for this unit that shows how to dis-assemble the unit and then what to look for and replace to rebuilt the power supply board and bring the monitor back to life.

http://www.ccl-la.com/blog/index.php/repairing-a-samsung-940n-with-a-blinking-power-light/

And here is a picture of the power supply board.



2_26_2012_6_01_47_pm.jpg

I hope this helps you, if so please rate my solution.

BuddyMc

Mar 25, 2008 | Samsung SyncMaster 940N Flat panel Monitor

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