my beloved PowerBook Titanium does not want to power up. Battery is ok as well as power supply. Any idea?
It could be your DC-in board. The best way to test it would be to slide in another battery that has a charge to it... if the computer turns on, it is most likely your DC-in board. You can purchase one here if you are interested:
And you can look at the repair guide here:
Try taking out your PRAM battery, shown in the remove PMU guide (it's the big thing marked 616-0114-A)
Disconnect the tri color lead from that to the PMU, start up the PowerBook (it should now work), then reconnect that cable and hopefully you should be left with a functioning PowerBook !
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