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From: larry moe 'n curly on 6 Nov 2009 08:34

philo wrote:
>
> About a year ago I did once try replacing the obviously bad caps on
> another mobo...
> but it was still flaky...so I assumed there were still some bad ones
> that just had not yet exhibited bulging.
>
> Considering that I've gotten several new boards in the $50 price
> range...to me, it's not worth it to bother with replacing caps...

At Badcaps.net, I've read that some brands of caps often fail without
bulging. OTOH when I replaced about a dozen 1,000uF, 6.3v Ltec caps
on an Asrock mobo, only the three that bulged were bad, according to
ESR readings.

I haven't done much checking, but the $50 mobos I've seen had at least
some low quality brand caps on them, and boards with only good caps
start at around $75.

From: philo on 6 Nov 2009 16:33
larry moe 'n curly wrote:
> philo wrote:
>> About a year ago I did once try replacing the obviously bad caps on
>> another mobo...
>> but it was still flaky...so I assumed there were still some bad ones
>> that just had not yet exhibited bulging.
>>
>> Considering that I've gotten several new boards in the $50 price
>> range...to me, it's not worth it to bother with replacing caps...
>
> At Badcaps.net, I've read that some brands of caps often fail without
> bulging. OTOH when I replaced about a dozen 1,000uF, 6.3v Ltec caps
> on an Asrock mobo, only the three that bulged were bad, according to
> ESR readings.
>
> I haven't done much checking, but the $50 mobos I've seen had at least
> some low quality brand caps on them, and boards with only good caps
> start at around $75.
>


actually I got some decent deals from NewEgg.

One of the boards was very good quality...it was an "open box" special.

The other was also pretty hi-quality board...but just slightly old
inventory.

I really do not need state of the art equipment here as I give all the
hard work to my GF <G>
From: kony on 6 Nov 2009 19:04
On Fri, 06 Nov 2009 04:48:19 -0600, philo
<philo(a)privacy.invalid> wrote:


>the first thing I did was look at the caps...
>they all look fine.
>
>Of course looks don't tell the whole story.
>
>About a year ago I did once try replacing the obviously bad caps on
>another mobo...
>but it was still flaky...so I assumed there were still some bad ones
>that just had not yet exhibited bulging.

Depending on board design, if too many in the same
subcircuit fail it can exposed the ICs to high ripple which
could damage them. Other times the board just had a
different fault altoghether and you notice the caps bulging
because the other fault prompted an investigation with the
cover off the system.

>Considering that I've gotten several new boards in the $50 price
>range...to me, it's not worth it to bother with replacing caps...

Depends on the age of the board, role of the system, if it's
your system, etc. Sometimes people will bring me a board
that had caps fail but they can't or won't spend much
money, and I happen to keep a stock of spare caps suitable
for most boards though not so much the solid caps many use
today but they fail far less often.

Replacing caps also cuts down on system downtime and time
spent reinstalling or reconfiguring the OS if/when the
replacement board isn't the same model... seems I often buy
boards when I see good deals on them but to try and replace
with the same board later it seldom seems to be worth paying
more to get the same thing again instead of an upgrade of
some sort IF buying a new board seemed otherwise the best or
necessary option.

From: philo on 7 Nov 2009 05:05
kony wrote:
> On Fri, 06 Nov 2009 04:48:19 -0600, philo
> <philo(a)privacy.invalid> wrote:
>
>
>> the first thing I did was look at the caps...
>> they all look fine.
>>
>> Of course looks don't tell the whole story.
>>
>> About a year ago I did once try replacing the obviously bad caps on
>> another mobo...
>> but it was still flaky...so I assumed there were still some bad ones
>> that just had not yet exhibited bulging.
>
> Depending on board design, if too many in the same
> subcircuit fail it can exposed the ICs to high ripple which
> could damage them. Other times the board just had a
> different fault altoghether and you notice the caps bulging
> because the other fault prompted an investigation with the
> cover off the system.
>
>> Considering that I've gotten several new boards in the $50 price
>> range...to me, it's not worth it to bother with replacing caps...
>
> Depends on the age of the board, role of the system, if it's
> your system, etc. Sometimes people will bring me a board
> that had caps fail but they can't or won't spend much
> money, and I happen to keep a stock of spare caps suitable
> for most boards though not so much the solid caps many use
> today but they fail far less often.
>
> Replacing caps also cuts down on system downtime and time
> spent reinstalling or reconfiguring the OS if/when the
> replacement board isn't the same model... seems I often buy
> boards when I see good deals on them but to try and replace
> with the same board later it seldom seems to be worth paying
> more to get the same thing again instead of an upgrade of
> some sort IF buying a new board seemed otherwise the best or
> necessary option.
>



What I often do is buy a board to match I cpu I already have.

Last year I got a couple of eMachines in here with bad motherboards...
but they had perfectly good dual core cpus's I did not want to waste.

So thanks to some deals at NewEgg, I was able to build a few machines
for next to nothing...I literally have boxes of spare parts in my workshop
From: kony on 7 Nov 2009 08:18
On Sat, 07 Nov 2009 04:05:07 -0600, philo
<philo(a)privacy.invalid> wrote:


>What I often do is buy a board to match I cpu I already have.
>
>Last year I got a couple of eMachines in here with bad motherboards...
>but they had perfectly good dual core cpus's I did not want to waste.
>
>So thanks to some deals at NewEgg, I was able to build a few machines
>for next to nothing...I literally have boxes of spare parts in my workshop

Me too, then eventually I need to clear out space and end up
throwing away some stuff because there's always 2/3rds of a
system built... if only I bought another X, Y, or Z part to
finish one. Right now I'm staring at a 1.1GHz Tualatin
system with a motherboard that I replaced the caps in about
5 years ago, it used to be mainly for internet and office,
but all the flash video and ads on the internet today it
can't handle very well so it gets demoted to a lesser job.
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