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TX97-E : CPU running slow after cpu temperature sensor failed - HELP!

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Colin Taylor

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Feb 28, 2000, 3:00:00 AM2/28/00
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Hi all,

I wonder if any of you can help me. I have a TX97-E motherboard, rev
1.12. The processor is an AMD K6/2 350 running at 375MHz (5 x 75MHz). When
I switched it on this morning I discovered that the CPU temperature sensor
had apparently failed. The symptoms are as follows:

During the boot process, after detecting the hard disk and CD-ROM, but
before the request to enter the password, a high pitched continuous tone is
emmited from the speaker and the POWER LED flashes continuously. There is
also a message saying that there is an error in the Power Management Setup.

Going into the BIOS/Power Management Setup shows and error on the CPU
temperature (LM75). Setting this to "ignore", I save the settings and
reboot.

The error message has disappeared but the tone and flashing LED
continue.

Going into Windows 98, the system feels really slow. So I run a few
tests (SciSoft Sandra, Hexen II, etc.) and confirm that the whole system is
running at about 25% normal speed. Basically, its the CPU running slow.

I try flashing the BIOS to 0108e from 0112e.001 but it makes no
difference.

-------------------------------------

So the big question, what now? Have any of you had similar problems,
what do you recommend?

My only idea so far is to remove the dead LM75. This, I think, will be
pretty hard but possible. I don't think that trying to solder in a
replacement is really viable. Any thoughts on whether removing this chip
will cure my problems?

Yours in hope,

Colin


Colin Taylor

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Feb 28, 2000, 3:00:00 AM2/28/00
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Hi,

Just to let you all know that I've answered my own question! :-)

I just couldn't resist the temptation to fiddle, and so, with trembling
soldering iron in hand I have removed the LM75. All is know O.K. The CPU
is running at the correct speed, the high pitched tone from the speaker has
gone and the Power LED is solid. The BIOS warning remains (obviously) but
that is just cosmetic and can be got rid of by setting the BIOS to Ignore.
Also, I RTFM and it does mention that the motherboard WILL switch the CPU to
a slower speed if the fans fail, apparently this also applies to the CPU
temperature sensor.

Thanks for your interest,

Colin


Moon Buggy

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Feb 29, 2000, 3:00:00 AM2/29/00
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Hmmm...sounds like a burned out CPU.....have you tried other CPU (not
o/ced)?

"Colin Taylor" <colin....@mcmail.com> wrote in message
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Wayne Monteath

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Mar 1, 2000, 3:00:00 AM3/1/00
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I love it!

What would have happened if you had set the settings in the BIOS to
"ignore" before you removed the LM75 with a soldering iron?

Can you send me your LM75, I would like to put it on my P55T2P4! <VBG>

Wayne Monteath

"For every software problem there is a hardware solution."

or

"If I can not fix it, it probably was not broken in the first place."

Colin Taylor <colin....@mcmail.com> wrote in article
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Colin Taylor

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Mar 2, 2000, 3:00:00 AM3/2/00
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Hi,

I take your point, although I did actually set the BIOS to ignore before
getting the soldering iron out, but it made no difference.

Cheers,

Colin

P.S. I don't think you'd want the LM75 as it's a bit mangled and part of
the casing broke off. :-)

Wayne Monteath <mont...@atreide.net> wrote in message
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