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The PowerMac G5 is a desktop computer first produced in 2003 by the Apple Corporation. This guide will review the repair process of an Apple PowerMac G5 model number A1047 EMC 2061 from 2004. It was discontinued in 2006 as part of the Intel switch first to developers then consumers.

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Boots whenever it feels like it

I got a Powermac G5 I'm trying to work on.

The first time we turned it on we immediately noticed the time/date settings were off. Swapped the PRAM and set the time/date and that seems to be fine.

The unit itself seems to boot whenever it feels like it though. When we are able to get a POST on the screen we attempt to run TechTool to diag the unit but it just locks up on a grey screen when we try to boot off the disc.

Other times when it powers there is a chime but nothing will display on the screen.

Any ideas?

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You have the:

A1047 (EMC 1969C)

Power Macintosh G5 2.5 DP (PCI-X) Mid-2004

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Try resetting your SMU---link provided.

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

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8 Comments:

Disconnect the internal hard drives when trying to boot from Tech Tools. Re-seat or replace the RAM.

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Ok... finally got something. After finally getting it to boot to and run a diagnostic utility. As soon as it got to the logic board tests, almost insta-fail. The unit posted an error code (which I don't have due to the fact that its written down at work) that definitely contained "CPU" in it.

Next question, anyone know where to get a new processor for this bad boy?

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Would you give us the last three letters of your serial number for correct identification? I may have what you need. Do you have the original system installation disks, you will need them to sync the fans after changing the CPU.

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Not knowing your specific version the best I can do for you is to suggest looking on ebay under Powermac G5 components. Changing CPU's you will probably need the proper AHT to set the fans. Good luck.

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Good thinking Ralph.

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xpwtvsean will be eternally grateful.
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