20 Most Recent Samsung SyncMaster 940N Flat panel Monitor Questions & Answers


There is an option on the monitor to reset colour to factory default. Just bring up the on screen menu by pressing the left most button at the botton. Use the button next to this to highlight the colour settings which I think is the 5th or next to last option down. You will then see the option to reset colour and various other factory default settings. Happy computing

Samsung... | Answered on Apr 08, 2016


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/

Samsung... | Answered on Dec 14, 2014


Has a shadowing problem where everything on the screen was shadowing to the right. Did basic troubleshooting techniques and found that it was due to a loose connection to the computer. You may want to check this if resetting to factory settings doesn't help.

Samsung... | Answered on Jun 16, 2014


940N?

Samsung... | Answered on Apr 25, 2014


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

Samsung... | Answered on Oct 19, 2013


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

Samsung... | Answered on Feb 26, 2012


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

Samsung... | Answered on Feb 26, 2012


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/


2_26_2012_5_47_09_pm.jpg

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

BuddyMc

Samsung... | Answered on Feb 26, 2012


Hello,

You need to have the 3 capacitors. There is not a 2460uf capacitor, If one of the 3 fail then the other two will still work, if you have just one capacitor and it fails then you have a dead power supply with the first failure.

Buddy
Corporate Computer
www.ccl-la.com

Samsung... | Answered on Nov 28, 2011


They can be 1000uf 25v (20% higher value is OK), higher voltage is also OK but it may not fit the board. The temperature rating must be 105c and Low ESR type which is very important for switching power supply. You should replace them in a set.
You can get the PANASONIC FM or FC series from DIGIKEY, or from Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

Samsung... | Answered on Aug 10, 2011


Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed SAMSUNG monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series

Samsung... | Answered on Apr 05, 2011


Monitor this old will more likely to have bad DC filter caps by now, but you also may have failing LCD panel also. I would inspect the caps and voltages in the power supply section first.
You can failed SAMSUNG monitors due to bad caps in my albums.
You should read my guides also.
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find.
Please leave rating if it helps.

Samsung... | Answered on Jan 07, 2011


If you are going to DIY and already try the monitor with another PC, and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed SAMSUNG monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Samsung... | Answered on Jan 04, 2011


i have the same problem, also looking for an answer....

Samsung... | Answered on Jun 17, 2010


It depends bad the parts are broken, this is 2007 model, you may have hard time getting replacement parts, details pictures will help.
http://s807.photobucket.com/home/budm/allalbums

Samsung... | Answered on Mar 29, 2010

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