물건을 수리하세요 커뮤니티 상점

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.

20 질문 전체 보기

옵션

Power light blinks twice, fans high

I know this type of question has been asked here but id like to explain my issue.

Power Mac G5 has been sitting on the shelf of a business for at least 3-4 years with no use or ever being powered up. I get it today and power it up but immediately the fans run high and theres no video on the screen. The power light blinks white twice constantly.

I took out all of the ram - same exact thing (and no beeps even).

I take out all the ram and pram battery - no change.

I held the pmu button - no change.

What am I probably looking at? May just need a new pram battery since it was sitting dormant for so long? logic board? psu?

any help is appreciated.

답변되었습니다! 답변 보기 저도 같은 문제가 있습니다

좋은 질문입니까?

예 아니요
점수 2
댓글 1개

I got it up and running! Radioshack had the PRAM battery I needed - decided to replace it just because it was old. I installed 5G ram in pairs (which was the main problem to begin with) and I was able to install my OS after finding an install disc and buring it to DL DVD. Alls well. thank you!

의

댓글 달기

답변 1개

필터 기준:
가장 유용함 가장 최근 가장 오래된
선택된 해법

옵션

The fans kick into high by default when a temp sensor fails to keep from cooking the CPU or other components like a GPU.

You have damaged RAM, and possibly other problems.

• 2 Flashes: No RAM is installed or detected (could be bad RAM).

• 3 Flashes: Incompatible RAM types are installed.

• 4 Flashes: No RAM banks passed memory testing.

• 5 Flashes: No good boot images are detected in the boot ROM (and/or there is a bad

sys config block).

• 6 Flashes: The processor is not usable.

Replacing the PRAM battery is good idea - the battery is recharged when the computer is plugged in, but the life of a battery is at most 5 years. PRAM Information includes:

  • Speaker volume
  • Screen resolution
  • Startup disk selection
  • Recent kernel panic information, if any

If you experience issues related to these functions, you may need to reset the NVRAM or PRAM.

Resetting the SMC or PRAM is not a "fix" it should only be done as part of a troubleshooting process.

If this answer is acceptable please remember to return and mark it.

이 답변이 도움이 되었나요?

예 아니요
점수 2

댓글 5개:

Thanks for your reply. I removed all the ram from the powermac and shouldn't the motherboard beep at me like other motherboards do? I haven't worked on powermacs in the past so I'm not sure if its special and won't beep with no ram.

Also, I tried a working module of pc3200 ram in each of the 8 slots, one slot at a time, and it still does the same thing - fans immediately run high and no video on monitor. Think my Motherboard is bad?

의

ok i never knew about the installing RAM in pairs on a G5 (http://manuals.info.apple.com/MANUALS/0/...). Never worked with them before but I installed 2 sticks of ram in each slot 1 and i got the apple chime and no blinking lights! just a solid light!!! amazing. but the fans still run high and no video output. still trying to boot to OSX install disc.

The fans which run high are the 2 fans between the HDD and the disc drive.

could THIS then be the motherboard? video card?

의

Anything is possible. No video could be a blown video card…are there fans on the video card? Not knowing why it was parked that might have been the original problem. You could have a bad optical drive…or HD you almost have to put the components in known "good" machines or cases and try them.

의

Got a question- Got the G5 Dual Mac unit yesterday for a dummy project - It was red on start up due to unspported ram, sorted that out now but when I power the unit on I have a Constant White Status Light - None of the above but no display and no power to KB / Mouse. Hard to find some info on these units. Any Ideas ?

의

Are the KB and Mouse plugged into the monitor? The USB ports on the displays of that time are known to be unreliable. A lot of problems with the G5 (also the incorrect RAM error) are caused by cracks in the solder. Because of EU regulations tin less solder had to be used and with temperature changes cracks appear. I can get mine working after heating the motherboard with a heat gun but then it dies again after it cools down a bit.

의

댓글 달기

답변을 추가하세요

tech4eleven 영원히 감사할 것입니다.
조회 통계:

지난 24시간: 0

지난 7일: 18

지난 30일: 49

전체 시간: 13,905