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Dell monitor black screen, blinking power light

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Re: 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

Posted on Dec 01, 2008

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Re: Dell monitor

Monitor Help CH000315, Black borders on side of screen. CH000316, Dead or black pixels. CH000403, Macintosh and/or PC monitor compatibility.
Black borders on side of screen. Additional information about what causes black borders on computer displays.

Good Luck, Please dont for get to Vote/Thank You.

Posted on Dec 20, 2007

Re: Dell monitor

I get this problem too, usually I just punch the moniter(not on the screen part) until the screen comes back. its pretty effective but annoying to do every few hours.

Posted on Apr 11, 2008

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  • 159 Answers

SOURCE: Power Light Blinking & Black Screen

A blinking blue light indiactes that your power-inverter board is not putting out what it should. It needs an overhaul which may be a simple as changing out the capacitors on the boards.
It could go beyong that to transistors or even a bad bulb.
It will have to be opened up to do that.
A picture may show visual signs of damage. If you can take one and email it to me , I'll take a look.

Posted on Oct 18, 2008

  • 440 Answers

SOURCE: Black screen; blinking power light

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

Posted on Feb 07, 2008

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.

Posted on Oct 23, 2007

  • 8 Answers

SOURCE: Dell Blinking Power Light

There are 4 transistors that go bad due to various issues (one being a cold solder issue with the power inverters for the transistors. I had this fixed and replaced the transistors. They lasted about 10 months). The 4 No. 2SC5707 transistors must be desoldered and removed, new ones put in their place and resoldered. I took the parts (transistors) and the removed power/circuit board from the LCD to a tv repairman and he did the repairs (de and resoldering) for about $60.

Posted on Dec 24, 2008

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SOURCE: dell 17'' flat panel monitor power light is blinking

some transistors on the board have shorted they supply power to the inverter to run the lamps, they power is not cut off intermittently and the protection circuit has stopped the monitor. the fix is here
goo dluck if you want it fixed for you let me know

Posted on Mar 22, 2009

  • 19396 Answers

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.

Posted on Apr 22, 2009

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