Question about Apple 22" Cinema Display Monitor

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22" Apple Cinema Display doesn't power on

When I press the power button, a white light comes on and then goes off again in a couple of seconds. I'm using an Apple DVI to ADC adapter. Is the power adapter bad, or is it a monitor problem?
It's a model M8149 22" Apple Cinema Display.

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This may be an issue with the display detecting the wrong video format or is using an unsupported resolution for this Apple Cinema Display 22"

Procedure:
• Make sure your Mac is turned off.

• Once your Mac is shutdown, you will need to perform what is called a PRAM reset (Parameter RAM)

• Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously .

• Turn on the computer.
• Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.

• Now, hold the keys down until the computer restarts and you hear the start up sound for the third time.

• Release the keys and allow the Mac to start up.

If that does not help here is additional support reference from Apple regarding its LCD displays:

Apple Support Link:
Power Light Flash Issues

Let me know if this helps!

Regards,

-Mactechtrainer

Posted on Jan 31, 2010

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