Re: [SLUG] hardware issue

From: Kwan Lowe (kwan@digitalhermit.com)
Date: Mon Aug 08 2005 - 14:51:45 EDT


> Thing was the system was operating just fine before I removed the cpu
> chip. And the only thing that I removed (aside from two fans), was
> the cpu chip. So I removed those two fans, when I turned it on the
> hard drives spun up, and the remaining fans spun, and the heatsink got
> really warm.

Some boards have a fan sensor. If the fan is not functioning it will refuse to power
the CPU. The fans and drives will spin up before the machine POSTs (in most cases)
so at least your power seems fine.

>
> I then Powered it down and removed the cpu chip and it's fan, and
> powered the system back up, same exact result (minus the hot
> heatsink).
>
> Another test I did was to unplug the machine remove the battery, wait
> 15 seconds (I counted them down), and then put the battery back in,
> plugged in the computer and hit the power button, same reaction (hot
> heatsink, no beeps, no display).

Make sure to drain the PS by turning it on while unplugged. If you just unplug
there's usually some residual minimal charge that will keep the CMOS active. You
have to jumper the Clear CMOS pins to really clear it. Try powering on the board
while unplugged and you'll see the fans spin up.
Hopefully it's not the processor...

> It's an american megatrends bios (or at least that logo was displayed
> at bootup back when it worked).

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