Fellow listers,

I bought a 3400 on eBay that was advertised as unable to charge or run off
its a/c adapter.
Thinking I could fix it I reset the power manager, pram, checked pram
voltage, swapped every component, both batts, everything but the
motherboard, so that is where the problem is.

The symptoms are weird: the control strip shows correctly the a/c adapter
being there or not.
The main batt will deplete as if the a/c adapter is not there, even though
it shows it is. Pulling the main batt while a/c is connected causes the
screen to go blank and the speakers squeal.

So.... since there is a broken main board component, where is it exactly
that I can test? I have tested the a/c connector on the logic board with a
VOM meter and it looks OK. In summary I need to test continuity where power
goes from the a/c to the battery. The software does detect the charger is
plugged in so that circuit is OK. Wish I had a schematic.

-Phil- 

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