I fixed my Powerbook 100 by replacing all capacitors on the logic board and in the LCD panel.
If you take an ESR meter, you will see they are all faulty and most of the leaking fluid badly.
Also make sure the battery switch at the back of the powerbook is in the upside position.
If you open the powerbook 100 for repair, it's also best to remove the metal lever from the battery sensor switch which sits just between the 2 battery terminals on the logic board. Just remove the metal clip from the switch: this will prevent that the powerbook tries to charge or take power the battery and has another advantage that you can keep the Pram settings when you insert 3x CR2430 batteries.
If you don't remove the metal clip from the switch: the powerbook 100 will always loose his Pram settings when you disconnect the power adapter, even with brand new CR2430 batteries installed as it assumes it still has power from the main battery.
Nico
If you take an ESR meter, you will see they are all faulty and most of the leaking fluid badly.
Also make sure the battery switch at the back of the powerbook is in the upside position.
If you open the powerbook 100 for repair, it's also best to remove the metal lever from the battery sensor switch which sits just between the 2 battery terminals on the logic board. Just remove the metal clip from the switch: this will prevent that the powerbook tries to charge or take power the battery and has another advantage that you can keep the Pram settings when you insert 3x CR2430 batteries.
If you don't remove the metal clip from the switch: the powerbook 100 will always loose his Pram settings when you disconnect the power adapter, even with brand new CR2430 batteries installed as it assumes it still has power from the main battery.
Nico