I was fixing up a friends Dell tower and the crummy CapXon output caps in the PSU were bad. These were 2200uf/6.3V jobs. My experience, having fixed a huge amount of test equipment over the decades, is that electrolytic caps with less than a 15V or so rating are invariably the first to fail. I can't imagine designing 6.3V caps into anything!
Not having a suitable replacement on hand, and knowing that low ESR is really the primary consideration in a switching supply, not value, and suspecting that the CapXon part has no special abilities in that area, I installed a couple 150uF OSCONs. These have ultra low ESR and huge ripple current capabilities. So far the PSU is working like a champ.
Still, I wish the value were higher, though design-wise I'm not sure that anything justifies it. Just curious, what do other think about what I did? Also, does anybody have actual specifications on the CapXon junk?
Best,
Conrad
Not having a suitable replacement on hand, and knowing that low ESR is really the primary consideration in a switching supply, not value, and suspecting that the CapXon part has no special abilities in that area, I installed a couple 150uF OSCONs. These have ultra low ESR and huge ripple current capabilities. So far the PSU is working like a champ.
Still, I wish the value were higher, though design-wise I'm not sure that anything justifies it. Just curious, what do other think about what I did? Also, does anybody have actual specifications on the CapXon junk?
Best,
Conrad
But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. 
I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
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