Re: What's your best guess?



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Jan Alter
bearpuf@xxxxxxxxxxx

"Larc" <larc@xxxxxxxxxxx> wrote in message
news:jju2e4514dtaf2nj9ti91ql5l4td6ebcje@xxxxxxxxxx
On Mon, 29 Sep 2008 20:03:46 -0400, Paul <nospam@xxxxxxxxxx> wrote:

Visually inspect the Southbridge. ICH5/ICH5R have a failure problem,
usually triggered by ESD (electrostatic discharge). The major meltdown
mode looks like this. When the chip burns, the motherboard will no
longer reboot.

http://web.archive.org/web/20051231121215/http://www.x86-secret.com/pics/news/q105/frout.jpg

http://onfinite.com/libraries/179057/2ea.jpg

The location of the burn mark, is right above where the USB ports
receive I/O power. All the ICH5 chips I've seen, have no heatsink
on them, so it'll be easy to check for this. Just take the side
off the computer and look.

I appreciate this, Paul, but the Southbridge looks fine. I'm
suspecting the PSU and will check it out tomorrow.

Larc

Below are 4 websites giving detailed information about testing a PS. They
are easy to understand and straight forward. I included the video link but
would not base my full judgement on that one alone since you are not getting
all the different voltage readings just connecting a fan. I suppose you can
purchase a PS tester for $13, but you will glean more from using a
multimeter for the same price without having to rely on a couple of red or
green lights that glow from a little device that is only used to check
computer power supplies.

http://www.metacafe.com/watch/729606/how_to_test_your_computers_power_supply_psu/

http://www.certiguide.com/apfr/cg_apfr_TestinganATXPowerSupply.htm

http://www.techwarelabs.com/guides/misc_mod/psumod/

http://www.duxcw.com/faq/ps/ps4.htm


Jan Alter
bearpuf@xxxxxxxxxxx






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