If you gotten as far as Scott Holder suggested below and you are trying
to figure out if it's the motherboard or the power supply, you might
want to try the following.
1) Disconnect AC power cord.
2) Disconnect power supply connector from motherboard. ( the white
plastic connector with 12 wires ) (NOT the ribbon cable)
The connector has two rows of six wires going into it.
3) Connect the AC power cord.
4) with a voltmeter look for a voltage with a magnitude greater than 19
volts DC between
n
this point (blue wire )---- o o o o o o ----- and this point (black
wire)
o o o o o o
The n above indicates the position of the plastic locking tab when you
are facing all the connector holes.
If you are getting around 0 volts between these two points, the problem
is with your power supply.
stephen kenda
snip
>
First thing I'd do is listen for a ticking noise. If it's ticking, it's
the dreaded Tick of Death. This can be fixed either with a new
power
supply, or replacing a capacitor if you don't have semi-1337
soldering
skills.
Next you can pop the top off (Grab the front edge of the two
sides (the
vertical parts), squeeze, and lift. I believe it has ridges) and
watch
while pushing a Duo in to see if anything is blocking. There
should be a
spring-return slider on the left side with a little tab that goes
between two little black boxes. When that crosses the black
boxes, the
mechanism should fire. You can push this manually and see if it
goes. If
not, it's either not getting power or the inject/eject mechanism
isn't
working. You can check this by removing the big motor thingy with
a few
screws on it and manually sticking the Duo on the connector. If
it then
powers up, then it's the mechanism. If not, it's the power supply
or
motherboard. From there, it gets tougher figuring out which one
is the
problem :) There's a site somewhere that describes how to make a
Mac
power supply power up manually, but I can't find it. Anyone got
it?
And that is the quick version of dock diagnosis :)
Scott Holder
<
end of snip
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