The best I can offer you is to measure the voltages at the bottom of the system. Review this IFIXIT guide [guide|21212] jump down to Step20 the red screws are the power feeds for the logic boards. Remove the fan assembly stopping at Step8. Then jump down to Step19 removing the cage. At this point you need to use extreme care! As you don’t want your meters probes from shorting across from the screw heads. Check the left side and the right side to see if you get power. If you don’t then you know you’ve got a bad power supply.
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The best I can offer you is to measure the voltages at the top of the system. Review this IFIXIT guide [guide|21212] jump down to Step20 the red screws are the power feeds for the logic boards. Remove the fan assembly stopping at Step8. Then jump down to Step19 removing the cage. At this point you need to use extreme care! As you don’t want your meters probes from shorting across from the screw heads. Check the left side and the right side to see if you get power. If you don’t then you know you’ve got a bad power supply.
We had two power supplies go because someone disconnected the system from the UPS and use an unprotected outlet (we had bad power where I had worked and we needed UPS’s). You may need to make that investment to protect your system.
The best I can offer you is to measure the voltages at the bottom of the system. Review this IFIXIT guide [guide|21212] jump down to Step20 the red screws are the power feeds for the logic boards. Remove the fan assembly stopping at Step8. Then jump down to Step19 removing the cage. At this point you need to use extreme care! As you don’t want your meters probes from shorting across from the screw heads. Check the left side and the right side to see if you get power. If you don’t then you know you’ve got a bad power supply.
We had two power supplies go because someone disconnected the system from the UPS and use an unprotected outlet (we had bad power where I had worked and we needed UPS’s). You may need to make that investment to protect your system.