Question about Samsung Syncmaster 940BW LCD Monitor

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My SyncMaster 940BW Samsung monitor does not respond to any Laptop/computer connection. The on/off blue botton is blinking. It worked well a while ago. ANy suggestions?

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aleksa

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  • Contributor
  • 34 Answers

Hi there,
You can try to disconnect VGA cable to see will the notification "no VGA signal" appear on screen. If so the problem could be with PC graphics, else it is power board problem bad caps.Thanks

Posted on Oct 24, 2013

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5 Related Answers

tantong

Somsak Tantong

  • 138 Answers

SOURCE: Samsung LCD Monitor SyncMaster 203B

Hi this is the way how to examine what's wrong with your LCD monitors. After you turned it on and the screen blacked out or stopped working, 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,

Posted on Mar 26, 2008

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Anonymous

  • 2 Answers

SOURCE: Monitor goes blank after 3 seconds -Samsung SyncMaster 920NW

hello i have the same problem, there are 4 lamps (bulbs) inside the monitor when some of them falls the system turn off, cheks and good look

Posted on Oct 27, 2009

Anonymous

  • 4 Answers

SOURCE: my monitor 940n samsung syncmaster gone in black...

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

Posted on Dec 17, 2009

Louis Ebert

  • 732 Answers

SOURCE: Samsung SyncMaster 940n monitor that turns on then goes black

rcpips, You may need to replace one or possibly 5 -8 aluminum can "electrolytic filter capacitors" on the "switch-mode-power-supply/CCFL inverter board. If, as you say "works for 5 or 6 seconds" then that means that fuse is good. Another thing you will need to inspect SMPS board for is "cold" "frosty looking" solder joints where the components (surface mount or through hole) are soldered to the copper circuit traces. May need large magnifying glass or low power inspection microscope to locate them. Resolder any that look bad or loose. Some solder joints have thinner than "hair" thermal fractures that can also cause YOUR TYPE OF SYMPTOM!! PARTS: digikey. mouser. newark. and possibly Radio Shack. If buying filter capacitors, make sure they are rated 105 deg C only!! NOT 85 deg C!!! If caps need to be replaced (swollen, leaky) be sure to tell us the brand name you find installed on your unit! CAPXON, ELITE, JUN-FU are just 3 that you don"t want to find in your unit. BAD news if you do!! If DIY suits you, remember to document with "close-up" digital stills your unit tear-down, so you can reassemble unit without any "extra" parts laying on kitchen table!! Filter capacitors are polarized. You put them in + to +, - to -!!! if you put them in backwards they go BOOOOMMM!!! Hope this helps a little. lmistyrel on aim or 12fixlouie at fixya.

Posted on Jan 30, 2010

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Anonymous

  • 1 Answer

SOURCE: Samsung 953BW monitor. Blue light is flashing but no picture.

hi, i have the same problem...any solution?

Posted on Jun 26, 2010

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1 Answer

Samsung syncmaster940bw blackscreen with light blue blinking of its power button


That is a typical symptom of a failed power supply board. Here is a post that shows how to open the monitor and what to look for and replace to repair the unit.

http://www.ccl-la.com/blog/index.php/repairing-the-samsung-940mw-lcd-tv/

I hope this helps.

BuddyMc

Apr 18, 2012 | Samsung Syncmaster 940BW LCD Monitor

1 Answer

I have a Samsung 940bw monitor. After pressing the auto button, it does not work anymore. Is there a problem about monitor or is it broken? I am waiting for your help. Thanks.


Hello
damnor01 here to the rescue!

Welcome to Fixya.

Since you pushed the Auto button it is possible that the monitor has changed the input type to a type other than that you are currently using.

For instance it may have chosen to accept VGA input however you have the DVI or HDMI connected.
To fix this you will have to push the auto button again, and possibly again to get it to find your current input channel.
You may need to turn your computer off and then back on again.

You may need to connect your monitor using a different connector, example via VGA, DVI or HDMI. It all depends on the connection you have at present.
Blue Connector is VGA.
White connector is DVI.
HDMI is very narrow conector usually black.

Please be sure to rate this session!
Thanking you
damnor01

Mar 18, 2011 | Samsung Syncmaster 940BW LCD Monitor

1 Answer

I have a Samsung SyncMaster 940BW. My young son played with the menu bottons and I cannot restore the screen to its original settings. How do I restore to factory settings?


catchymob, If, with monitor OFF, push and hold "menu" button, and then push the "on/off" button. Still not reset? Try visit to Samsung web site. Hope this helps. 12fixlouie
Let me know with reply or comment from you.

Aug 13, 2010 | Samsung Syncmaster 940BW LCD Monitor

1 Answer

Samgung pc monitor has a plain white screen when turned on. Also goes off after a short while and the blue power button blinks.


plain white screen means loose conecting the lvds cable to panel. reconect it.
if its goes off then check power board +5v or +14v filter capicitor.

Feb 17, 2010 | Samsung Syncmaster 940BW LCD Monitor

2 Answers

Screen not coming on at start up. just blue power light flashing.


Hi,

I can think of a few possible reasons
First,did you check all the card connections? A lost PCI connection could easily cause such unstable behaviour and check ram,
remove 1 of the ram memory cards,  after that you check its working or not.

Hope this helps.

Thanks,

Dec 01, 2009 | Samsung Syncmaster 940BW LCD Monitor

1 Answer

Syncmaster 940bw buttons on front of monitor stoped working completely


You mean monitor is now dead or does it come on and front panel buttons are not usable?
Samir

Jun 06, 2008 | Samsung Syncmaster 940BW LCD Monitor

1 Answer

How to connect my speakers to my monitor


you will not be able to connect your speakers to your 940BW monitor, because the monitor itself does not have any audio in/outs (or speakers for that matter).

what you will need to do, is to hook up to your computer tower. usually, most soundcards will colour-code the 3.5mm jacks you need green (although I have seen cards that have black jacks as well).

Dec 12, 2007 | Samsung Syncmaster 940BW LCD Monitor

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