My monitor screen remains blank when I turn it on. The little display light at the bottom right is on. The brick has been tested and is fine.
Anybody has any idea? I took it to a few Mac shops but they all refused to open it, so they don't know what the problem is.
Apple will take it but it will cost me the price of a new monitor.
I'm really not happy about it and I won't go there but the monitor was only 16 months old when it stopped working. (no more warranty).
Had a similar problem with similar symptoms. Try unplugging the firewire and usb. Might help for a while. It did for me. In the end I risked the price of a new power supply. That fixed it and my 23" has been working fine since. Have to order the power supply directly by contacting Apple's service people. I found no other way to get one.
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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).
Hello, 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.
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.
-After removing the plastic ends, remove the two other metal pieces that the plastic ends were attached to.
-Turn monitor upside down and you will see two small tabs on each end. Just pull those outward. They don't move far, but that releases the bottom seam of the monitor.
- Carefully pull the two pieces apart. Remember that you will put a crease on the front of you monitor if you open it too much.
- If you have a tool to remove the power cable great, but if you don't you can carefully pull the cable through the hole.
-Then the whole LCD with all the boards can be removed and serviced.
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!!!!
Sounds like the 90w power adaptor. This has happened to my 23" Apple monitor several times. (I'm on my third 90 watt "brick"!) It seems to happen after about one year of use. All you can do in the meantime is never shut down or let the monitor go to sleep.