Do you replace sleeve bearing fans on site?

[c_hegge]

Re: Do you replace sleeve bearing fans on site?

I find that the clicking momaka mentioned only affects some delta fans. I've pulled a few from HP CPU coolers where it's fairly noticeable, but on others, it's not. My PSU Load tester had two delta fans. the only thing I can hear from them is just a loud roar.

[momaka]

Re: Do you replace sleeve bearing fans on site?

Does it have a Newton Power 250W?

Fan might be a Delta then. I was just left wit the impression that it has an Adda fan. So who knows... it's been over 5 years since I opened that one.

What PSU does it have? It must be a good one to have lasted that long.

185W Lite-ON (IIRC). It's one of those very short ones, similar to the Bestec ATX-1956D. All output caps inside it are Panasonic HFQ (some even 12.5 mm diameter) and primaries are a pair of Panasonic, Rubycon, or Nichicon (again IIRC, since I opened that thing up only very briefly about 2.5 years ago). 12V rail output: a whopping 4 A. With a single hard drive, it drops to 11.87V .

It never had any lubricant in its "permanently lubricated" bearings

[Wester547]

Re: Do you replace sleeve bearing fans on site?

Fan might be a Delta then. I was just left wit the impression that it has an Adda fan. So who knows... it's been over 5 years since I opened that one.

Well, it could be ADDA... I don't remember where at the moment but somewhere on the board someone posted a thread about a slim Newton Power 160W or something along that nature having an ADDA fan that was known to seize and they replaced it with a Sunon fan promptly. 4A on the +12V rail isn't that bad for a 185W PSU. A 200W proprietary Newton Power I have only has 6A on the +12V rail, but inside a 10A ultrafast recovery rectifier from STMicroelectronics was soldered to the +12V output, on the secondary heatsink, so you might find similarly overbuilt rectifiers in your Lite-on. The dip below 11.90V could be because of group regulation combined with a relatively low amount of power on the +12V rail rather than solely a lack of power.

Back to fans, yes, 'permanently lubricated' is nothing more than marketing prattle. There is no such thing as permanent lubrication in fans, when you really think about it...