Power Supply issue ??

Hi all,

My son's computer is one I built for him about 2-3 years ago. It has
developed an odd issue. When I press the on swtich nothing happens. If I
plug and unplug is a few times it will evenutally work. No real pattern
that I can see. Also the Audigy 2ZS Platnium sound card only works
occasionally. If we turn the speakers on and off sometime if will work.

Running Win XP SP2, 2 gim memory, Asus mother board, AMD X2 chip, Nvidia
graphics card (6000 series).
The power supply is an Antec True power 2.0 480 blue. As I recall the first
power supply on this computer (the one that came with the Antec Sonnata 2
case) failed after about 2 months and I replaced it with this one. No
issues until about 2 weeks ago.

My first thought was powe supply is going back, but I guess it could also be
the power cord, case switch, or MB issue. Before I buy a new power supply
here, any thoughts?

"Bluenose 637" <wgkenney@comcast.net> wrote in message
news8adnStBitivRZXanZ2dnUVZ_uevnZ2d@comcast.com. ..
> Hi all,
>
> My son's computer is one I built for him about 2-3 years ago. It has
> developed an odd issue. When I press the on swtich nothing happens. If I
> plug and unplug is a few times it will evenutally work. No real pattern
> that I can see. Also the Audigy 2ZS Platnium sound card only works
> occasionally. If we turn the speakers on and off sometime if will work.
>
> Running Win XP SP2, 2 gim memory, Asus mother board, AMD X2 chip, Nvidia
> graphics card (6000 series).
> The power supply is an Antec True power 2.0 480 blue. As I recall the
> first power supply on this computer (the one that came with the Antec
> Sonnata 2 case) failed after about 2 months and I replaced it with this
> one. No issues until about 2 weeks ago.
>
> My first thought was powe supply is going back, but I guess it could also
> be the power cord, case switch, or MB issue. Before I buy a new power
> supply here, any thoughts?
Did you happen to check if the CPU fan starts to spin up when you turn it on
and then stops? Most Asus boards have an LED that will be on if power is
going to the MB. Is that on? If the answer to both is yes, I would suspect
the PSU in "most" cases. It is really an educated guess since I have seen it
(and read about it here) on many occaisions. The only real way to determine
the problem is to check voltages from the PSU to the MB or try a known good
PSU if you have one around. There have been a lot of Antecs having problems
lately, especially in this NG. I use PC Power and Cooling PSUs in most cases
myself, but that is just a personal choice.


Ed

Thanks - Let me check on this. I do know that the fan does not come on and
stop. When I press the button nothing happens at all. When it does finally
start the fan comes on and stays on. I'll have to open it up when my son
shuts it down this afternoon and look for the LED when it is down.

I may try a differnt PSU instead of Antec. I liked the the fact that this
one adjust the fan speeds for me if there is no load. I will have to check
the MB specs as it may have the QFan alternative (I use that fine on my
current rig)


"Ed M." <ed@edmedlin.com> wrote in message
news:Vf5Oi.1250$lE2.27@newssvr22.news.prodigy.net. ..
>
> "Bluenose 637" <wgkenney@comcast.net> wrote in message
> news8adnStBitivRZXanZ2dnUVZ_uevnZ2d@comcast.com. ..
>> Hi all,
>>
>> My son's computer is one I built for him about 2-3 years ago. It has
>> developed an odd issue. When I press the on swtich nothing happens. If I
>> plug and unplug is a few times it will evenutally work. No real pattern
>> that I can see. Also the Audigy 2ZS Platnium sound card only works
>> occasionally. If we turn the speakers on and off sometime if will work.
>>
>> Running Win XP SP2, 2 gim memory, Asus mother board, AMD X2 chip, Nvidia
>> graphics card (6000 series).
>> The power supply is an Antec True power 2.0 480 blue. As I recall the
>> first power supply on this computer (the one that came with the Antec
>> Sonnata 2 case) failed after about 2 months and I replaced it with this
>> one. No issues until about 2 weeks ago.
>>
>> My first thought was powe supply is going back, but I guess it could also
>> be the power cord, case switch, or MB issue. Before I buy a new power
>> supply here, any thoughts?
> Did you happen to check if the CPU fan starts to spin up when you turn it
> on and then stops? Most Asus boards have an LED that will be on if power
> is going to the MB. Is that on? If the answer to both is yes, I would
> suspect the PSU in "most" cases. It is really an educated guess since I
> have seen it (and read about it here) on many occaisions. The only real
> way to determine the problem is to check voltages from the PSU to the MB
> or try a known good PSU if you have one around. There have been a lot of
> Antecs having problems lately, especially in this NG. I use PC Power and
> Cooling PSUs in most cases myself, but that is just a personal choice.
>
>
> Ed
>

Don't know, sorry

"Bluenose 637" <wgkenney@comcast.net> wrote in message
news8adnStBitivRZXanZ2dnUVZ_uevnZ2d@comcast.com. ..
> Hi all,
>
> My son's computer is one I built for him about 2-3 years ago. It has
> developed an odd issue. When I press the on swtich nothing happens. If I
> plug and unplug is a few times it will evenutally work. No real pattern
> that I can see. Also the Audigy 2ZS Platnium sound card only works
> occasionally. If we turn the speakers on and off sometime if will work.
>
> Running Win XP SP2, 2 gim memory, Asus mother board, AMD X2 chip, Nvidia
> graphics card (6000 series).
> The power supply is an Antec True power 2.0 480 blue. As I recall the
> first power supply on this computer (the one that came with the Antec
> Sonnata 2 case) failed after about 2 months and I replaced it with this
> one. No issues until about 2 weeks ago.
>
> My first thought was powe supply is going back, but I guess it could also
> be the power cord, case switch, or MB issue. Before I buy a new power
> supply here, any thoughts?

Hi all,

Replaced power supply and it is working fine now. Not real impressed with
Antec, Two power supplies in just a few years.


"Bluenose 637" <wgkenney@comcast.net> wrote in message
news8adnStBitivRZXanZ2dnUVZ_uevnZ2d@comcast.com. ..
> Hi all,
>
> My son's computer is one I built for him about 2-3 years ago. It has
> developed an odd issue. When I press the on swtich nothing happens. If I
> plug and unplug is a few times it will evenutally work. No real pattern
> that I can see. Also the Audigy 2ZS Platnium sound card only works
> occasionally. If we turn the speakers on and off sometime if will work.
>
> Running Win XP SP2, 2 gim memory, Asus mother board, AMD X2 chip, Nvidia
> graphics card (6000 series).
> The power supply is an Antec True power 2.0 480 blue. As I recall the
> first power supply on this computer (the one that came with the Antec
> Sonnata 2 case) failed after about 2 months and I replaced it with this
> one. No issues until about 2 weeks ago.
>
> My first thought was powe supply is going back, but I guess it could also
> be the power cord, case switch, or MB issue. Before I buy a new power
> supply here, any thoughts?

In article <r-idnUkj3bz8I4vanZ2dnUVZ_uGknZ2d@comcast.com>,
wgkenney@comcast.net says...
> Hi all,
>
> Replaced power supply and it is working fine now. Not real impressed with
> Antec, Two power supplies in just a few years.
>
<snip>

I bet they lasted long enough to go out of warranty.

Bill

LOL! exactly right
"Bill" <spamtrap@tinlc.lumbercartel.com> wrote in message
news:MPG.2180b143d8f6d72b9896d2@localhost...
> In article <r-idnUkj3bz8I4vanZ2dnUVZ_uGknZ2d@comcast.com>,
> wgkenney@comcast.net says...
>> Hi all,
>>
>> Replaced power supply and it is working fine now. Not real impressed
>> with
>> Antec, Two power supplies in just a few years.
>>
> <snip>
>
> I bet they lasted long enough to go out of warranty.
>
> Bill
>

On Oct 27, 10:20 am, "Bluenose 637" <wgken...@comcast.net> wrote:
>>> Replaced power supply and it is working fine now. Not real impressed
>>> with Antec, Two power supplies in just a few years.

Everything implies the power supply was not defective. If the power
supply controller was not outputting a sufficient signal, then
multiple good power supplies would appear defective until one finally
was sensitive enough to see that defective signal. Just another
example of why even car mechanics are quickly unemployed when using
shotgunning.

One indication of marginal signals would be another infrequent and
unexpected shutdown some many months later.

On Sat, 27 Oct 2007 18:51:35 -0700, w_tom <w_tom1@usa.net>
wrote:

>On Oct 27, 10:20 am, "Bluenose 637" <wgken...@comcast.net> wrote:
>>>> Replaced power supply and it is working fine now. Not real impressed
>>>> with Antec, Two power supplies in just a few years.
>
> Everything implies the power supply was not defective. If the power
>supply controller was not outputting a sufficient signal, then
>multiple good power supplies would appear defective until one finally
>was sensitive enough to see that defective signal. Just another
>example of why even car mechanics are quickly unemployed when using
>shotgunning.
>
> One indication of marginal signals would be another infrequent and
>unexpected shutdown some many months later.

Some Antecs are susceptible to 5VSB and other output rail
capacitor failures. A visual inspection of the PSU (Opened)
would tend to find such a fault.

Many PSU claiming over 400W at moderate price have used some
marginal parts to meet that price-point and do end up
failing at about the same age as this unit did. We could
definitely blame Antec but many of the value-priced models
can fail under similar, certain circumstances like
moderately high load and higher temps, especially after web
reviewers started giving praise for PSU which were quiet due
to less airflow, compounding the problem. Ultimately one
can spend a bit more initially or spend more later to repair
or replace.

On Oct 28, 8:29 am, kony <s...@spam.com> wrote:
> Some Antecs are susceptible to 5VSB and other output rail
> capacitor failures. A visual inspection of the PSU (Opened)
> would tend to find such a fault.

What is the typical size of that 5VSB capacitor?