Hello nfh It sounds like the system is not getting enough power. The most likely part would be the power supply unit, but it could also be the power distribution board built into the system board. I would suggest toggling the voltage switch on the PSU to make sure it didn't move out of the 115v selection. Also, reseat the cabling and try another power cord. If the issue persists then I would look at swapping components. This is the part number for the PSU: NH493 Some of our PSUs have extra connectors that make them proprietary. I'm not sure if this one is proprietary. I would suggest reviewing the specs and connectors to make sure they match any other PSUs you attempt. Thanks
I have a PowerEdge T105 that is only lightly used but has been switched on almost continuously for 4½ years. Yesterday it suddenly powered off and won't turn back on again. There are no lights on the front or back. The only light is an amber LED on the motherboard close to the power supply unit which is continuously dimly lit (not flashing). Am I correct in thinking it's a faulty power supply unit, or could it be much worse such as a BIOS/motherboard failure? If it's the PSU, can I buy any generic PSU to replace it, or do I need to buy something specific to this range or model?
T105 no power and steady amber LED on motherboard