"Gareth Magennis" wrote in message
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"Sam Goldwasser" wrote in message
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"Gareth Magennis" writes:

"Bennett Price" ""bjpriceNOSPAM\"@NOSPAMcal berkeley.edu" wrote in
message
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I've got a small 12V DC .9 Watt 'muffin' fan (1.75"x1.75"x3/8").
It was the cooler for a video card's processor chip and was
frozen up.

I put a drop of oil into its sleeve bearing and it now runs
reliably - almost. It will start every time as long as it is
not oriented with the open 'face' down. (The open face is the
side in which you can see the bearing). If the open bearing is
down, it sometimes starts and sometimes needs a slight nudge to
get it going.

What's going on? How come? TIA

Presumably because the bearings are worn out. Get another one.

I've disassembled these, cleaned, and relubed with decent success.

But a new fan is not expensive.



Yes, not nearly as expensive as the possible damage caused by a stalled
worn out fan that soemone tried to bodge back to working condition instead
of replacing it. I'm thinking Power Amps, computer chips, or any gear
that someone has paid you to fix properly.


Gareth.




Doesn't sound like anyone has paid him to fix it, the assumption is that
it's his own stuff that he's fixing himself. I've been known to repair these
little fans so I can keep using my PC until I can find a suitable
replacement. Some graphics chipsets use oddball custom heatsink/fan
assemblies that are difficult to find replacements for.