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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