Supermicro / Ablecom SP302-1S Power Supply Failures
At my day job we're seeing some failures of Ablecom (Supermicro) SP302-1S power supplies. These SP302 units are used in 1u Supermicro servers. We had one failed one that was out of warranty, I decided to peel it open and see what went wrong.
Not surprisingly, a Teapo capacitor (1000uf @ 10v) was looking pretty bloated. Replacing it with a random pull that was laying around the lab fixed the power supply. More faulty Chinese capacitors. We've seen 4 more of these supplies fail at work, so my guess is all of them are suffering from the same issue. The other failed ones at work are under warranty, but I'm afraid the replacements will have the same faulty components.
Notes: Revision 3.1, Ablecom, SP302-1S used on Supermicro PDSMI+ system boards. Symptoms, units won't power on, LEDs blink faintly, repetitively, indefinitely. With working supply they come on, even with unit powered off.
(Blue electrolytic capacitor on edge of board is the replaced one.)
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