I called Apple support, authorized a case. Shutdown, reinsert top rise, restart success. Yesterday I pulled the top memory riser, left MP off for 30 minutes then when I reconnected power I could startup successfully. Pressing down the SMC RST button stops this loop, but still cannot startup. When I reconnected power the MP began a familiar 17 second cycle, both sets of Memory Riser Card Diagnostic LEDs illuminate for about 3 seconds, fans start, shutdown (repeat).
None of the usual voodoo worked, so I left the Mac Pro for about 6 hours with power and all cables disconnected. Sometimes just pulling the power cord for a few minutes works. The straight forward "press the SMC Reset button" never works. I go through the SMC reset procedure as per Article: HT1806. Typically in the morning I see the Mac Pro has shut down and will not startup. I ask because we have experienced several times over the past couple of years the following issue. Re: Mac Pro 2006, how do I assess whether the power supply is failing?
0 kommentar(er)
