[ale] Dead Motherboard?

[Omar Chanouha]

I am using an M2-atx. I am hooked the 12v from the battery to the M2+
and the I hooked the M2- to the frame of the car. The power supply was
meant for cars, so it should handle all spikes. I removed the battery
overnight, and nothing changed. The fan spins properly. The bench
power supply shows about .5 amp current drain.

I also hooked the 12v ignition from the ford harness to the M2, as
well as the amp on.

-O

On Thu, Aug 6, 2009 at 11:36 PM, Greg Clifton<gccfof5 at gmail.com> wrote:
> Carputer? How are you powering the system, inverter to AC power supply or
> 12V DC supply? Maybe you had a power surge when you unplugged and zapped
> something. The CMOS can be VERY static sensitive, so that the BIOS can get
> mucked up without actually being destroyed. You have already stripped
> everything and tested with a known good power supply, so the problem has to
> be confined to the motherboard components or CPU or RAM, correct? Not likely
> that the CPU or RAM crapped just from a power cycle. Does your power supply
> turn on at all? Does the fan spin, just "twitch" or do nothing? Your USB
> drive is probably running off the 5V standby power which is always present
> when AC is fed to the power supply (perhaps you have noticed that you can
> charge USB devices w/o turning the 'puter on. But if you have a dead short
> crowbar shutdown of the power, you shouldn't have standby power either.
>
> I recommend you use the jumper setting to clear the BIOS or even better,
> remove the battery for an hour or so (with no power plugged to the
> motherboard). That should unscramble your BIOS and put it back in the
> default or failsafe state reviving your board.
>
> One final note, NEVER scrimp on the power supply. No truer saying about
> computers than GIGO, esp. with regards to the power input!
>
> Regards,
> Greg Clifton
>
> On Thu, Aug 6, 2009 at 10:11 PM, Omar Chanouha <ofosho at gatech.edu> wrote:
>>
>> I put a carputer together using an intel D945GCLF2D motherboard. I
>> installed it and everything worked. Then I unplugged it to the
>> faceplate on, but when I plugged it back in the screen wouldn't
>> display anything. So I took it to my bench, unplugged everything from
>> it, and hooked it to a reliable power supply. Again, nothing. I don't
>> get any BIOS beeps, nor any LED activity.  If peripherals are
>> attached, they do get power, i.e. the dvd tray opens, which is
>> connected via usb. It is so wierd b/c I didn't change anything that
>> would affect the mobo, nor did I reverse the polarity. Could it be
>> memory? I don't think so because the mobo guide says it gives
>> beeps/messages for memory erros. Is the mobo dead? Are there any
>> possible explanations as to why this happened, so I don't do it again?
>>
>> Thanks,
>>
>> -O
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