K7S5A - toasted Mosfet - HELP!

[Guest]

Archived from groups: alt.comp.periphs.mainboard.elitegroup (More info?)

Just had a bad encounter with a K7S5A and was hoping for some advice.

Assembled PC only to find that on booting to CMOS one of the MOSFETS
was getting rather hot and my XP2400+ was identified as a DURON 1500.

I altered the bus speeds to 133/133 ( as the memory is DDR 2700) and
when I rebooted the formerly sloghtly overheated MOSFET glowed like a
lightbulb and so I naturally pulled the plug.

What I REALLY want to know, is whether this was caused entirely by the
BIOS being out of date or because I did something wrong in the
assembly?

Further to the point: does anyone think that the board is now
re-useable or total scrap?

What are the chances that the CPU and memory were damaged in this
meltdown?

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.elitegroup (More info?)

"Destry Jones" <steve@destry.demon.co.uk> wrote in message
news:410cbcc5.147444967@news.demon.co.uk...
>
> Just had a bad encounter with a K7S5A and was hoping for some advice.
>
> Assembled PC only to find that on booting to CMOS one of the MOSFETS
> was getting rather hot and my XP2400+ was identified as a DURON 1500.
>
> I altered the bus speeds to 133/133 ( as the memory is DDR 2700) and
> when I rebooted the formerly sloghtly overheated MOSFET glowed like a
> lightbulb and so I naturally pulled the plug.
>
> What I REALLY want to know, is whether this was caused entirely by the
> BIOS being out of date or because I did something wrong in the
> assembly?
>
> Further to the point: does anyone think that the board is now
> re-useable or total scrap?
>
> What are the chances that the CPU and memory were damaged in this
> meltdown?

Although I cannot say for sure, I highly doubt that any wrong BIOS settings
to bus speed should be responsible for "setting your MOSFET on fire". Were
you overclocking at that time?

According to the information on the following webpage (scroll down to DEAD
MOSFET), "MOSFET glowing like a light bulb" does seem to be one of the more
popular ways for a MOSFET to die:

http://www.4qd.co.uk/serv/mostest.html

The chances that the CPU and memory are still intact are not bad if you
manually pulled the plug in time.
Al-U

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.elitegroup (More info?)

It is a sad story.

I had a shorted floppy drive blow up a couple of power supplies,
including the capacitors and the regulators.

If it was taken to a shop, they could test out your components in
other systems and eliminate the bad ones. I know of no other way.

Pj







On Sun, 01 Aug 2004 10:02:54 GMT, steve@destry.demon.co.uk (Destry
Jones) wrote:

>
>
>Just had a bad encounter with a K7S5A and was hoping for some advice.
>
>Assembled PC only to find that on booting to CMOS one of the MOSFETS
>was getting rather hot and my XP2400+ was identified as a DURON 1500.
>
>I altered the bus speeds to 133/133 ( as the memory is DDR 2700) and
>when I rebooted the formerly sloghtly overheated MOSFET glowed like a
>lightbulb and so I naturally pulled the plug.
>
>What I REALLY want to know, is whether this was caused entirely by the
>BIOS being out of date or because I did something wrong in the
>assembly?
>
>Further to the point: does anyone think that the board is now
>re-useable or total scrap?
>
>What are the chances that the CPU and memory were damaged in this
>meltdown?