Proliant ML350 G5 Fan Issue.

[xxbrycexx]

Hello, I have a problem with my Proliant ML350 G5 server. The other day I unplugged both power cords from the unit as I wasn't using the server in awhile (It's just a home test server). Today I plugged them both back in but only one PSU has the green light when powered on. The other PSU has no light on the back of it when on. The front of the unit has a flashing amber light on the front, on the External health LED.

The server powers on fine obviously as one PSU is working but is this a problem to just have one PSU? I noticed they are pretty expensive to replace and being a college student, I have to watch my spending.

One weird thing I just noticed while doing the HP Insight Diagnostics from the SmartStart CD (Says both power supplies are fine on the diagnostics (Power supply status test)) was with both power supplies plugged in, and only one working, when I unplug the one that isn't working, I hear the fans inside of it kick on. It is almost like if there is power going to it, the fans stop working but when there is no power, the fans work.

Any idea what's going on? I know it isn't the actual power supply slot as I put the working PSU in the non-working PSU's slot and it works fine.  It's just strange that this is happens after I removed the cords and put them back in. Also, when I unplug the cord to the PSU that isn't working, it makes several *click click* noises.

Thank you very much.

[xxbrycexx]

Another thing I just tried was removing the PSU that shows no power going to it, while the machine was running. When I removed it, I heard the "broken" PSU's fans come to a stop then when I put it back in, I heard the fans coming on at a steady force.

[iulmax]

the external system helth and the symptomes you descibed point to a power failure.

You confirm that you changed the location of the PSU in the slots and the problem moves with the suspected faulty PSU, you have your answer.

Sorry to give you the bad news. 

[xxbrycexx]

Thank you for the quick reply, it's much appreciated. Question tho, if the PSU can't get any power because it is 'broken', why is it that the fans still work inside of it with no power connected to it? That's what made me wonder if it's truely broken.

[xxbrycexx]

The working PSU gets pretty warm, I don't know if that is normal but should I just leave the broken PSU out or in? If I leave it in, I hear the fans work in it so it acts as added cooling but then I have a flashing amber light on the front of the system whereas if I leave the broken PSU out, all the lights on the system are green.

[Goutham_Sabala]

ML350 G5 server has known issues with certain rev of psus