Power Outage - Apple Cinema Not Turning On

Hello,
We had a power outage and after electricity came back I tried to turn on my computer. The G4 starts but somehow my Apple Cinema does not come on (the light does not turn on).
Any suggestions what I should do to fix it?
Thank you in advance for your help.
Chipfly
G4 Mac OS X (10.4.4)

Unplug the USB and firewire connectors on your monitor cable from the G4. Cycle the power on your computer and hit the power button on your monitor. I think it will now work fine, but it will require you to shut it off/on, like you would for other monitors.
Works for me. The G4/G5 uses the USB port as the communication link to the monitor to turn it off or on. Take this link out of the loop and the display will work fine, but it will now require your manual control. Take a look at the preferences for the display. With the USB cable plugged in, the options tab is seen. Disconnect the USB and the tab is not there (after a reboot). Hence the USB is more than an extension cord to your monitor sockets, its a remote control for the monitor. Note... Apple care has no knowledge of this. I figured it out by unpluging cables and what'ya know, the monitor came to life!
icey
I have had and currently do have a similar problem
with my G4 and Cinema HD display; the power goes out
and the display does not go on.
Typically I have simply had to unplug the Power
Adapter, Firewire, and USB cables, wait a few minute
and plug it back in and the Cinema display’s light
comes on , as well as the display. However as of
yesterday this trick does not work. The G4 does work
with my old Sony display so does this suggest that
the video card in the G4 is OK? Could the 90w Power
adaptor be the problem?
Ideas?
Thank you
G5, PowerPC, Single processor Mac OS X (10.4.8) 768meg ram

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      Device ID: 0x4966
      Revision ID: 0x0000
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          Main Display: Yes
          Mirror: Off
          Online: Yes
          Quartz Extreme: Supported
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      Speed: PC2700U-25330
      Status: OK
    DIMM1/J22:
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      Type: DDR SDRAM
      Speed: PC2700U-25330
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    DIMM2/J23:
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      Device ID: 0x0035
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      Revision ID: 0x0041
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      Device ID: 0x0035
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      Device ID: 0x00e0
      Subsystem Vendor ID: 0x17c6
      Subsystem ID: 0x00e1
      Revision ID: 0x0002
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          System Sleep Timer (Minutes): 10
          Disk Sleep Timer (Minutes): 10
          Display Sleep Timer (Minutes): 10
          Sleep On Power Button: Yes
          Automatic Restart On Power Loss: Yes
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      PCI Revision ID: 0x0043
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          Vendor ID: 0x045e
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      PCI Revision ID: 0x0043
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          Vendor ID: 0x047d
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      Wireless Card Locale: USA
      Wireless Card Firmware Version: 405.1 (3.90.34.0.p18)
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      Wireless Channel: 3
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              Display Terminal Window: 0
              Redial Count: 1
              Redial Enabled: 1
              Redial Interval: 5
              Use Terminal Script: 0
              Dial On Demand: 0
              Disconnect On Fast User Switch: 1
              Disconnect On Idle: 1
              Disconnect On Idle Timer: 600
              Disconnect On Logout: 1
              Disconnect On Sleep: 1
              Idle Reminder: 0
              Idle Reminder Time: 1800
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              LCP Echo Enabled: 1
              LCP Echo Failure: 4
              LCP Echo Interval: 10
              Log File: /var/log/ppp.log
              Verbose Logging: 0
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          Hardware (MAC) Address: 00:0a:95:9c:64:40
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              FTP Passive Mode: 1
              Gopher Proxy Enabled: 0
              HTTP Proxy Enabled: 0
              HTTPS Proxy Enabled: 0
              RTSP Proxy Enabled: 0
              SOCKS Proxy Enabled: 0
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          IPv6:
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              JoinMode: Automatic
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      Interface Type: USB
      Modulation: V.92
      SKU Name: UCJ
      Hardware Version: 1.0F
      Firmware Version: APPLE VERSION 2.6.6
      Driver: InternalUSBModem.kext (v2.6.6)
      Country: B5 (United States, Latin America)

Still not sure what Mac you have, but do you have a multimeter?
You can convert an ATX PSU for use on a G4...
http://atxg4.com/sawtooth.html http://atxg4.com/gige-da.html
http://atxg4.com/quicksilver.html
http://atxg4.com/mdd.html
http://atxg4.com/
Hank, have you tested the MDD PSU?
http://www.jcsenterprises.com/Japamacs_Page/Blog/D275729F-09DA-4FBB-96B3-BEEEB2C 04619.html

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If this doesn't work then:
Install Mavericks, Lion/Mountain Lion Using Internet Recovery
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
Boot to the Internet Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND-OPTION- R keys until a globe appears on the screen. Wait patiently - 15-20 minutes - until the Recovery main menu appears.
Partition and Format the hard drive:
Select Disk Utility from the main menu and click on the Continue button.
After DU loads select your newly installed hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed. Quit DU and return to the main menu.
Reinstall Lion/Mountain Lion. Mavericks: Select Reinstall Lion/Mountain Lion, Mavericks and click on the Install button. Be sure to select the correct drive to use if you have more than one.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
This should restore the version of OS X originally pre-installed on the computer.

After several power outages, there is only a white screen, an apple in the center and a time strip after the strip is complete it turns it self off what is this problem

I have a 27in Mac desk top, its about a 2009, after several power outages and the computer pluged up and on now when turn it on it shows a white screen, apple in the center and a time strip toward the bottom when the time strip goes to the end of the cycle it shuts its self off.
The only thing we have tryed which was from a forum which was simular problem was, command-option-p-r, hold them down til the screen was back up, we try several times it did not work, please,please some-one help we use this computer for our job.

Also the trick you used, is known as resetting the PRAM. Not always the best of ideas for Macs older than 4 years. But I'm glad it worked for you. There is a battery which will eventually need replacing inside that would actually make that technique stop your Mac from working until replaced.

23" Apple Cinema Display will not turn back on

For some reason this morning I thought I'd help the world and turned off my ACD. I'm back at the officce now and cannot turn it back on. It's been on since I bought it (yes, it goes into sleep mode when not in use) in December. In either case, is there a special trick to turning this thing back on? I tried the plug-unplug thing, I turned off and on my PC (I also use it for my g4 powerbook) to which it was connected at the time as well - nothing. Any thoughts out there?
Thanks in advance for any help,
PC Box Windows XP 23" Apple Cinema Display, also a 12" G4 Powerbook

I am having the same issue right now. Except it has happened with my 2 monitors on my dual monitor G5 Quad set-up. Both monitors are down. I tried a different monitor in the same computer and it works fine. So I think it must be a monitor related issue.
Although, I wonder if it possible that the computer has somehow put both monitors into a "deep sleep" mode? Is there such a thing. I tried a PRAM reset that didn't help, so I'm not sure if this is the case.
Next up is to figure out some way to test the power on the 2 power adapters/transformers without electocuting myself. I have a suspicion at this point that a power surge may have killed them?
Let me know if anyone has similar scenario, and if a solution was found.

I had a power outage, my battery powered surge protector worked. But now when I turn on my Apple TV, I cannot get beyond the computer and setting screen, and see the Apple TV options screen. What step am I missing. Internet is working.

After the power outage, turned on TV and tried connecting to my Apple TV, but directed to a screen with a computer Icon and a Setting Icon. Can't get past this screen to my TV options screen. Internet is connected??? How to I get to my TV options?

Yes I had already reset my internet connection and had no progress. However, while I was trying to figure out a solution I used my Apple TV to listen to music from my computer. Then I went back and tried again and the TV icons appeared - and Apple TV was working

What to do now when my iPad won't turn on after I turn it off. It shows only the apple logo. I am sure it has above 70% charge as when I sync my iPad it shows necessary detail in iTunes. I have tried, HOME & POWER button, but did not work.

What to do now when my iPad won't turn on after I turn it off. It shows only the apple logo. I am sure it has above 70% charge as when I sync my iPad it shows necessary detail in iTunes. I have tried, HOME & POWER button, but did not work.

First try a Reset ( No Data will be Lost )
Press and hold the Sleep/Wake button and the Home button at the same time for at least Ten seconds... (But can take Longer)... until the Apple logo appears. Release the Buttons
If no joy... Try a Restore...
1: Connect the device to Your computer and open iTunes.
2: If the device appears in iTunes, select and click Restore on the Summary pane.
Restoring > http://support.apple.com/kb/HT1414
Make sure you have the Current Version of iTunes Installed on your computer
iTunes free download from www.itunes.com/download
3: If Unable to Restore, try using the Steps in this article to force the device into Recovery Mode.
Note on Recovery Mode.
You may need to try this More than Once... Be sure to Follow ALL the Steps...
After you have Recovered your Device...
Re-Sync your Content or Restore from the most Recent Backup...
Restore from Backup > http://support.apple.com/kb/ht1766

After resetting my phone to factory settings, it will not turn on. When i press the power button a white screen and black apple pop up. it stays on that screen and will not go to the home screen, it will just die. please help!

after resetting my phone to factory settings, it will not turn on. When i press the power button a white screen and black apple pop up. it stays on that screen and will not go to the home screen, it will just die. please help!

Make sure it is charged for about 10min using the adapter, then connect in recovery mode, explained in this article:
If you can't update or restore your iOS device

After a power outage my usb ports on the back of the tower do not recognise the apple usb keyboard upon start up. How do I fix this issue?

I have a Mac Pro 5.1 and after a power outage my usb ports on the back of the tower do not recognise the apple usb keyboard upon start up. If I leave the plug out and then insert the keyboard after start up it works fine. The same happens with the front usb ports. How do I fix this issue?

System.log says USB related message?
Resetting SMC as well as NVRAM could solve the problem.
Intel-based Macs: Resetting the System Management Controller (SMC)
About NVRAM and PRAM

Power Outage - Apple Cinema Not Turning On

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