Question about Apple Cinema HD Display30" Flat Panel Monitor

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The USB/ Fire wire connections do not work with my Apple display

I've connected my apple cinema display (30 inch) to my G5 tower....the monitor works fine...but when i try to plug the USB or Firewire plugs into the back of the G5....the monitor goes off. I need to have the additional ports on the back of the G5 to do i fix th is?

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Try updating the drivers sounds like a software issue conflicting when putting other connections in


Posted on Feb 27, 2009


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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

1 Answer

My 30 inch Apple HD Cinema Display is stuttering/flickering upon opening video in full screen mode. Any idea on what the problem may be?

Check your connection to the screen. You may have a running application / process that requires a lot of processing power from your Graphics Processing Unit (GPU). If you wait until the application has completed its task, or quit the program, videos should run fine.

Dec 13, 2013 | Apple Cinema HD 30" LCD Monitor

1 Answer

May I Connect Apple 20" Cinema Display to orignal MacBook Air( does not have a Fire-Wire port)

Yes, you can do this. Firewire is not necessary. That is for connecting your hard-drives should you want to do it through your display.

Dec 18, 2012 | Apple 20 inch LCD Monitor

1 Answer

It stopped working

check the power supply board which failed. look for blown fuse and replace any bulged capacitor.

Sep 07, 2012 | Apple LED Cinema Display 27 inch flat...

1 Answer

The USB ports at the back of the display don't work

If all cables are connected properly, this might be a driver problem.

Oct 21, 2011 | Apple Cinema HD 30" LCD Monitor

1 Answer

Apple M8149 22" LCD.

This will be a driver problem. Solutions can be found on the Apple Support website

Apr 06, 2011 | Apple 22" Cinema Display Monitor

1 Answer

After a couple of electrical power outages my Cinema 20" Apple monitor doesn't work. The power light (lower right) goes through cycles of off, dim, bright, etc. sort of as if it's flashing a Morse...

There are three "morse code" flashes that an Apple Cinema display can produce that are diagnostic:
Three short flashes (morse "s") means incompatible video format. Try resetting the parameter RAM when restarting to go to the default

Short-long-short (morse "r") means "wrong power adapter." I've seen some monitors that will not work with an adapter that others will and that give this signal. In some cases this can be fixed by insulating the power sensing pin on the display power cord.

Finally morse "u" (short-short-long) means a backlight problem.

May 19, 2017 | Apple Cinema 20" LCD Monitor

3 Answers

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!!!!

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

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