![]() Add additional sticks in matched pairs, working outward in a mirror-image from the center pair. Beginning with the centermost slots, install one stick from each matched pair. ![]() Memory should be installed in matched pairs. Was the charge on the battery under 3V? If so, try without the battery, and/or replace it.ĭoes the front LED power light come on at all? Does it blink in a particular pattern? (Three flashes, pause, two flashes? Two long, one short? One if by land, two if by sea?)Ĭheck that RAM is paired properly. I presume you've plugged it into a working wall socket? (You may think that's a stupid question, but. If you have trickle charge, the problem is elsewhere. If you have no trickle charge, the PSU is dead. This voltage is present anytime the PSU is plugged into the wall, to provide power to the PMU and SMC circuitry. When you test the PSU (at least under Apple's instructions in the service manual), you're only testing for 24V trickle charge. ![]() I have an identical G5 to yours, and I've done similar troubleshooting on it and similar machines.
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