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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does boot and cant turn off but front light on

The mac stopped working but front light is still on and i cant turn it off

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First reset the PMU (Power Management Unit). Here's how: http://support.apple.com/kb/ht1939

Next replace the 3.6 volt 1/2 AA PRAM battery. Next see if you can reset the PRAM and Nvram: http://support.apple.com/kb/ht1379

Next observe the diagnostic lights on the logic board before and after trying to start and let us know what they are.

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