cinema display recognized, but black with non-working power button

i just bought a mac pro and used my 20 and 23 inch cinema displays with it. the first day i rebooted several times (because of installing various programs and doing a software update) and both screens worked fine.

however, today i start up my mac pro and the 23" (my main display with the dock, menubar, etc) was completely black with no power light. but i was baffled because it still had my menubar and dock, and acted as if it was still working. what is going on!?! any help would be greatly appreciated.
thanks,
morgan

mac pro, 23" and 20" cinema displays Mac OS X (10.4.10)

Posted on Jul 11, 2007 8:50 AM

99 replies

jrankin2

Level 1

0 points

Aug 31, 2007 4:01 PM in response to chief567

chief567 where did you buy a power brick for $66 with a trade in?

Sep 7, 2007 8:51 PM in response to morgan maassen

I am having the exact same problem. Seems to have been going on all summer. At first I didn't realize it was a monitor issue...

Will try the itunes updates and see what happens... 🙂

Sep 28, 2007 11:58 PM in response to ohickey

So how did you get the new brick? Do you know the part number? Thanks for the help!

Oct 4, 2007 11:31 AM in response to yank

Thanks! 🙂

yank

Level 1

0 points

Oct 14, 2007 1:43 PM in response to jcr123

Nope - replacing the brick was 100% effective for me. Well over a month since then too.

Oct 15, 2007 7:27 PM in response to morgan maassen

call 1-800-apl-care for a new powerbrick.
thanks for all the help/interest!
morgan

Dec 4, 2007 4:47 AM in response to diru

Thanks that was helpful. However, my issue was three short flashes, and I believe yours was two short followed by one long. I reset my pram and the issue has not re-appeared.

chazbarx

Level 1

0 points

Apr 20, 2008 6:29 PM in response to chazbarx

Randomly has came back to life. Few blinks off, but overall working.

Display continues to be my bane.

Apr 23, 2008 7:22 AM in response to Ben D:::

Graphics Update did this.. I hope 10.5.3 solves this insane issue because I don't have the time to reinstall my system every time apple screws up with a bad update...

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cinema display recognized, but black with non-working power button