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M6498 turns on but screen black what could be problem?

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Most likely a graphics card problem.
If you cannot diagnose yourself you would be best to take it a a Certified Mac Repairer.

Posted on Mar 12, 2011

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1 Answer

My imac m6498 will not power up or turn on at all and it is plugged in what could be wrong?


Could be a bad power supply, could be a bad power button, could be a bad logic board.

Jun 30, 2014 | Computers & Internet

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Factory restore m6498 imac4 without cd


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I got this imac desktop computer model # m6498 from my aunt. when i turn it on it shows a spinning loading wheel and i cant get pass that page...How do I fix this?


Luck you, hopefully we can get this fixed! Ok, there are a few things that might be causing this, and several ways of dealing with them.
Firstly, if you're not fussed about saving the data already on the computer, try the following:
  1. Turn the Mac on and insert the restoration disk that came with it (If you don't have one then you'll need to get one, try ebay or amazon, or an Apple store).
  2. Turn the Mac off with the disk still in
  3. Re-boot it, holding down the C key. This will boot up from the CD, and hopefully you'll be able to re-install Mac OS X, which will give you a working, clean machine.
If that doesn't work for any reason, I'll need some more information. Try this:
  1. Turn the Mac off, after ejecting any CDs.
  2. Boot up your Mac, and as soon as you press the power switch, hold down Command and V. This boots up in verbose mode, giving you more information about what's happening in the computer.
  3. Watch the instructions on the screen, and see if there are any obvious error codes, or if there are any instructions that the computer gets 'stuck' on.
If there are any error codes or sticky instructions, please post them back up here and I'll see if I can help some more.
Hope that was helpful, good luck!

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1 Answer

Upgrading memory


The illistrated guide to installing ram in your IMAC is located here:
http://manuals.info.apple.com/en_US/iMac_Late2009_UG.pdf
Good luck!
PLEASE CLICK ON LOTS OF THUMBS UP FOR ME!!!
Thank you,
James.

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How can I make an MP3 recording of my voice on my PowerMac Mod. M6498 desktop?


You need a mic input. I did a slick voice-over on my G5 by using the mic in the iSight camera. It's a very good quality voice mic.
If you don't have that, purchase iMic from a local computer apple store. This will allow you to hook up a mini stereo plugged mic to your computer with a USB connection and you can record from within Imovie and also from the system preference control for sound input. Then copy the sound file onto a CD as an mp3..

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A friend gave me a macintosh model m6498 when i


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No, if the picture of your tv screen is clear when when you watching. the troble of your tv is looseboard, and you replace your CRT socket too.

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