Question about Apple M8536 23" LCD Monitor

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Apple 23" Cinema Display HD M8536 black screen blinking powerligh

Light blinks twice short once long then long pause

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6 Suggested Answers

SOURCE: Apple Cinema Display 23" HD - Dust on inside of screen.

The dust in a can will ruin a computer because it only blows the dust around. Use a vacuum cleaner or a dry vac to get rid of dust.

The only solution to your problem would be to take the screen apart and clean the dust out.

Posted on May 29, 2008

  • 1 Answer

SOURCE: Apple 23" cinema display

thats supposed to mean theres a faulty powerbrick, however i have the same problem on mine and replacing that didn't solve it

Posted on Oct 31, 2008

cpenzes
  • 1102 Answers

SOURCE: M8536 Display not allowing computer

have you updated or changed anything recently

Posted on Jan 20, 2009

  • 2 Answers

SOURCE: apple 23 monitor 3 blinks and then pause, top screen is dim.

I have an older 20" display. I have had this same problem on occasion, and coincidentally, just experienced it again this morning. It seems to occur after I do an OS update. I powered down the computer, disconnected the display, reconnected by pushing firmly into place, then powered up. The flashing stopped and the display works fine. You might have a different problem, but that simple solution worked for me.

Posted on May 14, 2009

  • 1 Answer

SOURCE: Apple 23" Cinema HD Display went off

Hey - I just got done with 30 minutes of trying my cinema HD on my macbook pro and plugging and unplugging. When I plugged it into an extension cord in another socket the monitor started right up. I've had this configuration in my office for years with no problem...until today. Did mac send us a system upgrade that caused a problem with the monitor's power source???? Good luck!!!!

Posted on Jul 20, 2009

  • 1 Answer

SOURCE: Apple Cinema Display 23"

I am having these morse-code blinking power light issues with my cinema display right now. I just found the 3 top blinking patterns and what they mean on Apple's site: http://support.apple.com/kb/HT2811

Posted on Feb 24, 2010

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1 Answer

Goes black, blinks and sometimes works fine


Sometime the cross-talk of signals is caused by the wiring behind the computer, touching. Separate the wiring.

Mar 05, 2014 | Apple Cinema Display 23" HD Monitor

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Blinking light on 20 inch apple display


Blinking light on Apple cinema display usually indicates insufficient power from the power supply. Test it with another power supply from ANY cinema display (23" and 27" power supplies are ok to test with).

Feb 03, 2014 | Apple Cinema HD 30" LCD Monitor

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My 23" Apple cinema display (2002) has black screen and code flashes three short flashes. How do I find out if the monitor is dead or the power supply?


The only way to test is to use a known working power supply or known working cinema display with the parts you already have.

Dec 11, 2012 | Apple Cinema Display 23" HD Monitor

1 Answer

Apple Cinema HD Display 30'' black screen, power light blinking


I don't know what might have happened, but a number of years ago I had an apple monitor and the power light on it started blinking, so I got in touch with apple and they told me that it's flashing an error code, so they told me what the blinking indicated and fixed it.

So I think the blinking of the power light on your monitor could be indicating an error code so I suggest you call apple and they will identify what the error is indicating.

Feb 11, 2010 | Apple Cinema HD 30" LCD Monitor

2 Answers

Apple 23 monitor 3 blinks and then pause, top screen is dim.


I have an older 20" display. I have had this same problem on occasion, and coincidentally, just experienced it again this morning. It seems to occur after I do an OS update. I powered down the computer, disconnected the display, reconnected by pushing firmly into place, then powered up. The flashing stopped and the display works fine. You might have a different problem, but that simple solution worked for me.

Apr 04, 2009 | Apple Cinema Display 23" HD Monitor

5 Answers

Apple Cinema Display 23"


Hi all,
I had the “short long short” blinking led problem with my
23′ ACD after a power outage which left my screen blank and
my cheek wet with a tear for my baby. I read somewhere that
a guy was getting a 1 volt reading on the middle pin of his
damaged 90 watt power block. I figured maybe the display might
work if I could somehow block the middle pin. So I cut a small
strip of paper wide enough to block just the middle pin and long
enough to cover both sides and it looked like a “W”. I gingerly
pressed it into the brick receptacle with a toothpick leaving
just a little slack so it would not tear when I pushed in the
small white plug. It was a bit of a tight fit but guess what.
IT WORKED… I am now enjoying my beloved monitor anew and saved
$$$ on replacement brick or repair.
If you want to try it and you feel you’ve nothing to lose, make
sure you cover just middle pin (both sides) and you may have to try a couple of times. It worked for me, I hope you have good luck too.
Regards, Moozler

Oct 31, 2008 | Apple Cinema Display 23" HD Monitor

1 Answer

Apple 23" cinema display


thats supposed to mean theres a faulty powerbrick, however i have the same problem on mine and replacing that didn't solve it

Oct 28, 2008 | Apple Cinema Display 23" HD Monitor

2 Answers

Apple Cinema Display 23" HD - Dust on inside of screen.


Well, I pretty much knew that the display would have to be disassembled to clean the dust out. I should have been more specific by asking if the display "could" be taken apart to clean it out, especially since the dust is in between the image and light source layers.

Jan 15, 2008 | Apple Cinema Display 23" HD Monitor

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