George,
No physical damage, 2 of the machines came to me in that condition and
the one I was using just deteriorated over time.
Roger
George Mogiljansky wrote:
> Roger,
> So you're the one who outbid me on eBay for that 3400
> logic board!:)
> Seriously, the problems I have (not able to boot from
> the internal HDD, known good internal HDD not
> recognized, internal HDD spinning down often, fan
> turning on and off) disappear like magic if I attach a
> powered external SCSI device.
> Is there any physical damage to the logic board or the
> chip you mention? My problems started after a bad fall
> on a concrete floor.
> Best
> George
>
> --- "Volk (contractor)" <[EMAIL PROTECTED]>
> wrote:
> ..... along with
> > it's PMU functions:
> > The power management unit (PMU) is a 68HC05
> > microprocessor that operates
> > with its own RAM and ROM. The PMU IC performs the
> > following functions:
> > controls sleep and power on and off sequences
> > controls power to the other ICs
> > controls clock signals to the other ICs
> > supports the ADB
> > scans the keyboard
> > controls display brightness
> > monitors battery charge level
> > controls battery charging
> >
> > So when this chip starts to malfunction, it is
> > time to replace the
> > logic board as I have been unable to find a source
> > for the Apple programed
> > part andd have 3 units with the same problem.
> >
> > Good Luck
> > Roger
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