power supply connector burn out
zhang...@gmail.com
twice?!?!?!?
It looks like my 5v pins are not good or something.. at times.. the
plug gets too hot to touch and causes my computer to freeze. ive tried
a few things.. new mobo. new power supply. ive tried reinstalling into
my case... and ive tried disconnecting everything that i didnt need.
www.orst.edu/~zhangpe/power.jpg
www.orst.edu/~zhangpe/supply.jpg
thanks,
Peter
Sam Goldwasser
But did you change both the MB and PSU at the same time?
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Dave D
"Sam Goldwasser" <s...@saul.cis.upenn.edu> wrote in message
news:6wpsiud...@saul.cis.upenn.edu...
That's just what I was thinking. Once either the PSU or Mobo plug/socket
contacts have been damaged then they will fail to make a good connection
with new the hardware, causing heating and more damage ad infinitum. Both
PSU and Mobo (or at least the connectors) must be changed at the same time
to be sure of a cure.
I have to say I've built systems for 20 years or so and I've only once seen
obvious burning on power supply plugs/sockets. For it to happen twice to the
OP surely indicates that the fault is being carried on by mixing old and new
parts. It would be exceptionally bad luck for the fault to reoccur on
completely new hardware.
Either that or the plug isn't being pushed fully home each time, or it's the
same make/batch of hardware with a design flaw!
Dave
Jeff Liebermann
Looking at the photos, it appears that more than one pin is getting
quite hot. You're cooking pin 11, which is one of the 3.3vdc pins,
and 5 and 7, which are grounds. Kinda looks like your motherboard is
drawing far too many amps on the 3.3vdc line. Find an automotive amps
guesser used for measuring alternator current. These slip on the
wire, use the magnetic field generated, and do not require cutting the
wire to measure the current. Or, you can get a clamp on ammeter than
does DC (many are AC only). The specs on the MB should give you a
"normal" current value. My guess(tm) is that your MB has some of the
infamous counterfeit low-ESR capacitors which are drawing too much
current. Look for bulges on the top of the electrolytics surrounding
the CPU, or brown goo ooozing from under the caps.
--
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zhang...@gmail.com
yes.. ive swapped new motherboards and new power supplies at the same
time.id also say i have a few system fans running.
its so sad and discouraging having to buy new parts for my old machine.
i think i might just get a new comp soon. but it would be sure nice to
know what's going on with my setup.
budgie
Apart from poor contact (aka high resistance) on several pins, I'd have to
conclude excess current is being drawn on the 3v3 rail. That leaves out fans
and every other peripheral.
If this has occurred in the same case with swapping mobo and PSU at the same
time, what is the common factor? The case. Maybe there is a metal support
pillar being used where an insulated one should be, resulting in a short to
ground.
Franc Zabkar
to keyboard and composed:
>On 3 May 2006 17:44:53 -0700, zhang...@gmail.com wrote:
>
>>could someone please explain why and how this might of happened to me
>>twice?!?!?!?
>>
>>It looks like my 5v pins are not good or something.. at times.. the
>>plug gets too hot to touch and causes my computer to freeze. ive tried
>>a few things.. new mobo. new power supply. ive tried reinstalling into
>>my case... and ive tried disconnecting everything that i didnt need.
>>
>>www.orst.edu/~zhangpe/power.jpg
>>www.orst.edu/~zhangpe/supply.jpg
>
>Apart from poor contact (aka high resistance) on several pins, I'd have to
>conclude excess current is being drawn on the 3v3 rail. That leaves out fans
>and every other peripheral.
Graphics card?
>If this has occurred in the same case with swapping mobo and PSU at the same
>time, what is the common factor? The case. Maybe there is a metal support
>pillar being used where an insulated one should be, resulting in a short to
>ground.
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
budgie
wrote:
>On Thu, 04 May 2006 13:01:49 +0800, budgie <m...@privacy.net> put finger
>to keyboard and composed:
>
>>On 3 May 2006 17:44:53 -0700, zhang...@gmail.com wrote:
>>
>>>could someone please explain why and how this might of happened to me
>>>twice?!?!?!?
>>>
>>>It looks like my 5v pins are not good or something.. at times.. the
>>>plug gets too hot to touch and causes my computer to freeze. ive tried
>>>a few things.. new mobo. new power supply. ive tried reinstalling into
>>>my case... and ive tried disconnecting everything that i didnt need.
>>>
>>>www.orst.edu/~zhangpe/power.jpg
>>>www.orst.edu/~zhangpe/supply.jpg
>>
>>Apart from poor contact (aka high resistance) on several pins, I'd have to
>>conclude excess current is being drawn on the 3v3 rail. That leaves out fans
>>and every other peripheral.
>
>Graphics card?
Dunno, Franc. If the first noticeable symptom is the pooter freezing, I'd be
surprised if a video card could pull that sort of current off *any* rail without
itself showing signs. But nothing's definite.
And by peripherals I really meant off-board loads .... Mind you, one of my
kids pointed out that some SATA drives apparently load the 3v3.
lsmartino
answer. The power requirements for a Pentium III are way different from
the requirements of an AMD Athlon 64, for instance. Also, it´s not the
same a computer using the motherboard´s integrated VGA as other using
a state of the art video card, which will demand a lot of electrical
power from the motherboard.
Give us a better description of your system including:
a) Processor type and speed.
b) Amount of RAM, and if it is in a single stick or a cuople of them.
c) Model and brand of video card (if used)
d) Quantity of optical drives installed
e) Quantity of harddisks installed and their capacities.
f) Model and brand of motherboard
g) If there are any other expansion cards installed, include them in
the descripcion.
zhang...@gmail.com
happened to my new power supply. different pins if you look at this
picture when compared to my first power supply
http://web.engr.oregonstate.edu/~zhangpe/powersupply.jpg
ive tried running limited everything.. one drive. one piece of ram and
limited graphic card support.
my specs.
a) amd xp 2600+ running freq. 2.06. ghz 333 fsb.socket a.
b) corsair xms 512 and kingston hyperx 512 running pc 2700
c) pny 6600 gt agp 8x. running dual monitors
d) 2 ide harddrives 7200. 1 sata raptor drive.
f) original motherboard with problem asus 8 a7n8x regular
new motherboard with similar problem foxconn 600a01-6lrs
g) xfi sound blaster
h )case is antec dont knwo model number but rather old
i) power supply. thermaltake xp550 np: 430W
old powersupply (from original picture) turbolink cwt 420atx -12v 420
max power. with pentium 4 sticker
the reliability is variable. sometimes i can use it for days. and then
it just starts crapping out every hour or so.
i think my first power supply's 5 volts read as 4.5 volts... is that a
big problem?
-thanks
Peter
Pooh Bear
zhang...@gmail.com wrote:
> I want to thank everyone for the replies. Interestingly, this is what
> happened to my new power supply. different pins if you look at this
> picture when compared to my first power supply
>
> http://web.engr.oregonstate.edu/~zhangpe/powersupply.jpg
One of the power pins on your motherboard or mating lead is making a poor
connection and heating things up as a result.
As a result probably both the connector on the power supply and the motherboard
are likely trashed and the problem will continue until you replace both.
Graham
zhang...@gmail.com
grounding problem?
lsmartino
zhang...@gmail.com ha escrito:
The solution is to replace the PSU and the ATX Motherboard connector at
the same time, to avoid a repetition of the problem. There is no pint
in using a new PSU if the ATX motherboard connector is burnt.
Conversely, there is no point in having the ATX Power connector of the
motherboard replaced, and continuing to use the old PSU. You really
have to change both connectors at the same time.