Cinema Display not working

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Cinema Display not working

Hi,

Has anyone any ideas about my Cinema Display/mouse/keyboard, which has suddenly packed up. This has happened before in cold weather (below 14ºC when I occasionally leave the office un-heated over the weekend) On those occassions, I have waited until the office got to about 20ºC and then things would get back to normal. This has happened again, but now the G5 has powered up but no screen/mouse/keyboard. Any suggestions, other than not being mean with my office heating, welcome!

PowerMac, Mac OS X (10.6.6)

Posted on Mar 18, 2013 10:18 AM

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Answer 1

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BDAqua

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239,213 points

Mar 18, 2013 2:11 PM in response to photomouse

Hi, are the Mouse & KB Wifi or wired?

How to reset the SMU/PMU on a Power Mac G5 (Late 2004) or Power Mac G5 (Late 2005) ...

http://support.apple.com/kb/HT1436

Earlier G3, G4, G5 models...

http://support.apple.com/kb/HT1939

http://www.macusersguide.com/2009/05/resetting-pram-nvram-pmu/

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Answer 2

photomouse Author

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Mar 19, 2013 3:08 AM in response to BDAqua

Hi BDAqua, Thanks for your reply. I have tried resetting the PMU a few times with power on/off and made checks to cables etc. but no luck. The only difference was that the rear fans are no longer running at high speed. The mouse is connected by cable to the keyboard which in turn is connected by cable to the G5. Maybe I need to test the power output from the seperate transformer to the cinema display? Any more suggestions welcome. Thanks, photomouse.

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Answer 3

BDAqua

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Mar 19, 2013 10:46 AM in response to photomouse

Do you have another Mac with Firewire, so you can boot the G5 in Target mode...

http://support.apple.com/kb/HT1661

So we can maybe look at the log files on the G5 for clues?

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Answer 4

photomouse Author

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Mar 23, 2013 10:00 AM in response to BDAqua

Hi BDAqua,

I'm still having a problem with my Apple Cinema HD Display 23 " connected to a G5 Power PC running OSX 10.4.11. The screen will not wake from sleep mode unless I unplug everything, wait a few minutes and then reboot. I have set the sleep for the computer and the display to never but it still goes to sleep leaving the acd blank (with no little blue light on) Any further suggestions welcome. Thanks, Photomouse

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Answer 5

BDAqua

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Mar 23, 2013 10:41 AM in response to photomouse

Is the G5 really sleeping. or could it be the Monitor just going off?

Hold a flashlight at an angle to the screen real close, do you see a faint Desktop?

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Answer 6

photomouse Author

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Mar 23, 2013 11:09 AM in response to BDAqua

Just held a torch to the screen but can't see anything. I was listening to some music on iTunes and it carried on playing whilst the screen went blank.

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Answer 7

BDAqua

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239,213 points

Mar 23, 2013 3:09 PM in response to photomouse

Hmmm, best guesses... Power Supply... Video card.

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Answer 8

photomouse Author

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Mar 23, 2013 4:13 PM in response to BDAqua

Yes, maybe the transformer heats up and then stops working - I'm going to try and test it - I'll let you know. Cheers, Photomouse

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