We have an IBM X3500 7977-AC1 server. If the power button is pressed and released the server will not boot or run. However, as long as the power button is held in the server boots and runs fine.
No LED lights or logs indicate a problem (green lights on MB and each power supply present as well) and the server has been running fine over 6 months by keeping the power button held down using tape.
Reviewing the Problem Determination & Service Guide (49y0164.pdf) seems to indicate a motherboard problem, but that seems a bit extreme as MB replacement would be $$$ while we are resolving the issue with $0.xx piece of tape. Any insight or advise is greatly appreciated, other than buying more tape :-)
Machine Type-Model: 7977-AC1 with redundant power supplies/ fans.
System BIOS: 1.74
BMC Controller: 1.42
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3 replies Latest Post - 2012-12-24T07:41:06Z by SystemAdmin
Pinned topic X3500 Power Button Trouble - Power OK While Holding Button In
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Updated on 2012-12-24T07:41:06Z at 2012-12-24T07:41:06Z by SystemAdmin
Re: X3500 Power Button Trouble - Power OK While Holding Button In2012-11-30T19:47:37Z in response to SystemAdminAny word on this? We have two x3500 servers that have the exact same issue. We've replaced one power switch on one of them to no avail. We're looking into motherboard replacement as well.
Re: X3500 Power Button Trouble - Power OK While Holding Button In2012-12-10T05:39:42Z in response to SystemAdminWe have found a temporary working solution, at least for this server. There are two wires that run from the motherboard to the power switch. We replaced the power switch with a simple two-pole on/off switch. It's not pretty or elegant but is working without error or alarm.
We will replace the operator assembly in the near future to further confirm the issue is with the switch as opposed to the motherboard.