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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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Progressively reluctant to start up; now no chime, just fan.

Another carcass from a client. This 2GHz Dual Processor G5 got progressively worse about starting up; sometimes it would come on if the reset button on the logic board was pressed, but now it just whooshes up the fans and won't even chime; the fans stay on, but not loudly. We tried replacing ALL the RAM, using just pairs of RAM in different slots (in case one slot or pair of slots was bad), replacing the PRAM battery, disconnecting the HDs. The client finally gave up and bought a Mac Pro.

Does it sound like the power supply, or the logic board? Any other suggestions before I sell it for parts?

Added later: I did change the PRAM battery, reset NVRAM, zap PRAM, all that stuff. And let it sit with the power unconnected for a number of days.

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Since its a powermac my first thought would be the power supply. Do you have one you can substitute? Ralph

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No, I don't. I guess I could buy one to try, and sell it on eBay if it doesn't solve the problem.

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if you can manage to get it to boot again, try reseting the NVRAM, boot into open firmware, and type"reset-nvram" (to boot into open firmware, hold "command+option+o+f") also try reseting the PRAM, and checking the PRAM battery, since that little battery can cause so many problems.

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Been there, done that. I should have mentioned it. I'll edit the question to reflect that.

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I seem to be having the same problem as you had, Colleen. Did you have any success with the project or did you just scrap the unit for parts?

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The local Mac shop told me that with the G5s, they often suffer expensive logic board and/or power supply failures. I tried everything. It's going to recycling after having spent the last year under my dining room table :)

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