PowerMac G5는 Apple Corporation에서 2003년에 처음 제조한 데스크톱 컴퓨터입니다. 이 안내서는 2004년 Apple PowerMac G5 모델 번호 A1047 EMC 2061의 수리 과정을 검토합니다. 2006년에 먼저 개발자에게 그 후 소비자에게 Intel 스위치의 일환으로 판매가 중단되었습니다.

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One core of four (CPU A Core 2 Diode) Runs Really Hot

I have a Power Mac G5.

Hardware Overview:

Model Name: Power Mac G5 Quad

Model Identifier: PowerMac11,2

Processor Name: PowerPC G5 (1.1)

Processor Speed: 2.5 GHz

Number Of CPUs: 4

L2 Cache (per CPU): 1 MB

Memory: 12 GB

Bus Speed: 1.25 GHz

Boot ROM Version: 5.2.7f1

Lately the fans run loud so I installed Hardware Monitor and it appears that CPU A Core 2 is running into 90°C while all the other cores are staying below 60°C.

Can this be right? Wouldn't CPU A Core 2 be under the same die as CPU A Core 1?

Can anyone say why this might be happening and how I can fix it? I build computers and I'm not afraid of pulling the LCU out and re-applying thermal interface, but it sounds like the design of the computer might make that difficult.

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You may have developed a coolant leak. You'll need to do some reading on this, but here's a start:http://www.xlr8yourmac.com/systems/G5_co...


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I have inspected the inside of the case and see no signs of a coolant leak. However, I just noticed that the one core that is overheating, also has a higher voltage and current than the other three by 16-20%, the overheating core has a voltage of 1.29 - 1.35 while the others are 1.18 - 1.21, also, the Current is 23A while the others are 20A. I'm supposing this isn't a coolant problem, however, it doesn't look good for my old workhorse!

I suppose, before I do anything more I should reinstall Mac OS, just to be sure.

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Make sure you have the original system installation disk with the fan sycning software because any major changes will require it or your fans will run wild.

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I don't have the original disks, which were 10.4, I'd be installing directly with 10.5. Where can I find the fan syncing software? I have the full OS X 10.5 Install disks for all Apple hardware.

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Call Apple and request the original installation disk with the AHT and fan syncing utility, it will not be on a retail 10.5 disk. They should charge you $16 for it plus shipping and tax.

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