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Power Mac G5 Late 2005는 10월에 소개되었으며 다음 해 8월에 단종되었습니다. 2.0 GHz 듀얼 코어 프로세서, 2.3 GHz 듀얼 코어 모델 번호 A1177, 그리고 2.5 GHz의 듀얼 코어 듀얼 프로세서 (쿼드 코어)의 세 가지 구성 옵션이 있습니다.

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POST fails, checkstop LED blinks twice repeatedly

I’m playing with a Quad Core PowerMac G5 (A1117). So far everything was fine, I’ve reworked all the thermals and the machine worked well for more than a week under high load, compiling non-stop.

Today I’ve turned it off and after several hours tried to turn on. But it doesn’t POST anymore - checkstop led (led #7) blinks twice after power on, then waits, then blinks twice again. I’ve tried to pull out the RAM and graphics card - no change. Tried to power on without CPU module at all - well, as expected it turns on CPU leds.

Video: https://youtu.be/fHsGQON55CM

Would be grateful for any hints what may it mean.

답변되었습니다! 답변 보기 저도 같은 문제를 겪고 있습니다

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선택된 해법

With an experiment I figured out what it means. Double blinks mean that CPU B misbehave, single blinks mean that CPU A misbehave. Most likely I’ve damaged my CPU B while working on thermals.

By the way, 2.5 gHz 630-7419 CPU card seems to be interchangeable with 2.3 gHz 630-7418 - I replaced broken 630-7419 with 630-7418 and it worked without an issue.

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Pavel S. 님은 대단히 고마워 할 것입니다.
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