Samsung SyncMaster 930BF 19" LCD Monitor Logo
Posted on Nov 26, 2010

My monitor has a blinking green light for the power LED but only a black screen. The light blinks once long then once short then repeats itself.

5 Related Answers

A

Anonymous

  • Posted on Oct 23, 2007

SOURCE: Dell E172FP 17 monitor keeps blinking

That sounds like the backlight inverter board. Check ebay for the board or a repair kit for it.

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Anonymous

  • 440 Answers
  • Posted on Feb 07, 2008

SOURCE: Black screen; blinking power light

are using dvi cable did u try to hit the input botton on screen itself thx nick

Anonymous

  • 1 Answer
  • Posted on Aug 22, 2008

SOURCE: Acer Al 1714. LED light is blinking (orange not green).Monitor black.

Well, suddenly it worked again. But I waited the whole day >.>

Mahkoi

  • 1 Answer
  • Posted on Dec 01, 2008

SOURCE: Dell monitor

I have a Samsung SyncMaster 712n I turned the computer on , but my screen is black and the power light is blinking. I unpluged and repluged but still nothing on the screen.

Please help thank you , Mitzi

[email protected]

ginko

Ginko

  • 19396 Answers
  • Posted on Apr 22, 2009

SOURCE: Blue blinking light

The monitor is probably on protection.

To start unplug monitor from power and from computer and test computer with different monitor to find out if it is monitor or computer fault.

If it is computer fault and no video signal , then test:

  • Video cable.
  • Video adapter on PC (sometimes integrated on motherboard)
  • Motherboard.

If it is monitor fault , then the monitor is on protection.

When on protection you keep having a flashing led on front of the monitor , and monitor turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the Monitor goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or a broken contact, identified an internal fault and kicked in , starting the flashing light.


If you are in situation one, then the monitor will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occurr are a blown capacitor on power board, faulty inverter board, faulty input board, or a fault on LCD Digital Controller board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing statebecause of the video cable.

Try moving the video cable, and if the cable is not built in, then also try a replacement cable.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

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I have a Dell Dimension E521. When I cut the power on everything comes on including the monitor, but the monitor will stay black. It does say something about power save hit any button but the screen

A solid green light means the computer is operating normally.

A solid yellow light indicates the power supply is operating normally but the computer is not processing data.

This could mean there is a problem with the CPu or another component on the motherboard.


((A blinking yellow light indicates the power supply is receiving power from the wall, but not functioning properly.
This generally means the power supply itself is bad and should be tested or replaced.))


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Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, 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 DELL monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net
Replacement board: www.lcdrepair.us
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