I have one (of 3) hot swap Supermicro/Ablecom PWS-0050 SP382-TS server PSU that is mal functioning. Supermicro IPMI reports it as bad and led is orange on.
I took it apart tested transistors, diodes, capacitor but haven't found the problem. I'm a beginner.
In standby I have 5VSB, but not 12VSB, nor 3.3VSB. Here is the PSU Pinot: https://www.rcgroups.com/forums/show...Supply-Convert
There are 3 x 400V, 100uF capacitors on the primary side.
They measure:
- capacitance 85-86 uF
- ESR around 0.55 - 0.65 Ω (I've subtracted 0.15Ω that I measure when I connect my leads together)
I know it's a good practice to change them. But could this explain the whole problem? Or these are workables ranges?
Based on the physical dimension, the 3 caps are a bit expensive if not ordered from China. That's why I'm avoiding to quickly change them.
What do you think?
I took it apart tested transistors, diodes, capacitor but haven't found the problem. I'm a beginner.
In standby I have 5VSB, but not 12VSB, nor 3.3VSB. Here is the PSU Pinot: https://www.rcgroups.com/forums/show...Supply-Convert
There are 3 x 400V, 100uF capacitors on the primary side.
They measure:
- capacitance 85-86 uF
- ESR around 0.55 - 0.65 Ω (I've subtracted 0.15Ω that I measure when I connect my leads together)
I know it's a good practice to change them. But could this explain the whole problem? Or these are workables ranges?
Based on the physical dimension, the 3 caps are a bit expensive if not ordered from China. That's why I'm avoiding to quickly change them.
What do you think?
Comment