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Re: OT - power off probs

On Tuesday 27 December 2005 21:49, Piers Kittel wrote:
>Sorry - I didn't count the PSU fan :/  The PSU does have its own
> built in fan.  The spare 350watter has 2 built in fans.
>Also, it's proprietary so I doubt it'd be easy to find a replacement
> PSU.
>But it strikes me strange, the board starts powering off as soon as I
>swopped over the 2 systems - why didn't it start happening with the
> old system?  Because the old system didn't draw as much power?
>Cheers - Piers
Oops, sorry Piers, I just replied to the duplicate in my inbox.
I asked Piers to describe the psu cable<->motherboard connectors so I 
can see if they're like my big std stuff.

>Gene Heskett wrote:
>> On Tuesday 27 December 2005 20:12, Piers Kittel wrote:
>>>Even tho it's only about a year old?
>> A year old psu can have 4 oz of dust bunnies in it, completely
>> blocking any air flow.  This user said there was only one fan, the
>> one on the cpu.
>> Now, I've never seen although there may well be, an example of a
>> fanless psu, but at 240 watts rated, & say 95% efficiency (thats
>> being very very charitable BTW, most are hard put to make 90%) then
>> thats still 12 watts of heat to get rid of by whatever means.  With
>> no fan that assumes good radiant efficiency, and good thermal
>> condutivity to the outside world else something is going to get too
>> hot to work.  And once an overheat has shut one of these things
>> down (if its not a catastrophic shutdown where the magic smoke
>> comes out) then whatever caused the shutdown is going to become
>> ever more sensitive to over temps, turning itself into a nuisance
>> rather quickly.
>> With decent psu's being commodity items, carefull shopping will buy
>> you a case of 24 300 watters from the pacific rim people at less
>> than a $20 bill each including shipping.  I usually go for the even
>> bigger stuffs, 450-600 watts rated because they'll have 2 fairly
>> quiet, ball bearing rated fans in them, often thermostaticly
>> controlled & running easy, and will last for many years.  But they
>> ALL will benefit from an annual blow job administered by a 100+ psi
>> air hose.  That one point will extend their working life by 3 to 10
>> times depending on how much dust they manage to trap.
>> Who am I to sound like an expert when I don't even have a
>> briefcase? Just a semi-retired old fart who's been chasing
>> electrons for a living since about 1948.  The last 21 years as the
>> CE at a TV station here in WV.  Semi-retired because I'm still
>> doing it part time.

Cheers, Gene
People having trouble with vz bouncing email to me should add the word
'online' between the 'verizon', and the dot which bypasses vz's
stupid bounce rules.  I do use spamassassin too. :-)
Yahoo.com and AOL/TW attorneys please note, additions to the above
message by Gene Heskett are:
Copyright 2005 by Maurice Eugene Heskett, all rights reserved.

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