Hi @sygnus,
the Parts your replaced where faulty, or did you replace them without checking?
when you are already replacing parts you could also try to replace these:
- Mosfet B09N03 (EMB09N03H) or B09A03 (EMB09A03HP) - depending on the version
- Controller MAX8731A (MAX8731AETI+) or BQ24773 (ref BQ24773RUYT) - depending on the version
or you replace the whole board of the Robot, or the charger.
That would probably be easier...
But you did already check the battery, right?