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My Samsung monitor has gone dark. If I turn it off and then back on, it comes on for about 2 seconds.

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If it is a flat screen ,blow the back of it out and remove the dirt,and debris,It could be over heating,if it is a c r t ,do the same,but be more thurogh in the cleaning,use the air in the can if possible,but a air tank with a blow gun will do better,with more force.Try to disconnect it for a little while also,see if it is from heat.If it is a flat screen plazma select the manual setting,and then auto set,and see if that will work,if none of this helps,see if the computer shop can test it to see what is over heating it.Maybe just a bad solder and it needs to be re soldered.

Posted on Nov 14, 2009

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1 Answer

Monitor comes on and then immediately goes dark goes off


Your monitor's power supply is probably bad. If your inclined, you can pry apart the monitor shell and replace any bulged capacitors you see on the power supply. Replacement capacitors are available from mouser.com.

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Samsung 21.5 LCD monitor suddenly turned dark. Can this be fixed or should I just trash it?


Your monitor has symptoms of power supply failure. The age of the monitor and the cost of repair will influence your decision whether to repair it or dump it

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My samsung 940b it has a clear bright screen ( as normal ) just for 2 seconds then the screen turns dark but you can see very very dim Window logo.Turn off the power ( does not matter for how long ) when...


Shine a flash light onto the monitor, if you can see icons/desktopon the screen then you know you need a new monitor!
You should be covered under warranty!

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2 Answers

Screen is black


if it's new then get it replaced...
else u need to get it fixed from a tech shop....one of the bwlow is @ fault....
1 the LCD screen is gone,
2 the backlite (a small tubelite) is gone
3 the invertor board(a small PCB) behind is gone

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1 Answer

Monitor turns on for about a minute then screen fades to a half lit and then goes dark. if you turn it off even for a split second it comes back on and then repeats. This monitor has had less than 20 hours...


If it is left plugged into the wall, the power supply is always running 24/7 even the power switch is OFF.

Most common failure in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, 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 goes wrong: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further.
http://www.badcaps.net
http://en.wikipedia.org/wiki/Capacitor_plague

Apr 03, 2010 | Samsung SyncMaster 216BW Monitor

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Monitor just won't stay on.


  • power chord may be faulty
  • check the cable that connects it to the computer correctly
  • may be an internal circuit breaker
  • check the ports on the computer

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video controller card has gone bad need new video controller card.

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1 Answer

Monitor won't stay on.


hi there your problem .your monuter backlights gone so u need to new backlight

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