after dis assambly of nokia 100 look at the whole mother board if you find some burn or damage parts. may you find out carbon and rust in it. if you have carbon in it make the mother board clean and apply hot air to make it dry.
Once the mobile is dry check it and if not work ok then check whole tracks as given in above diagram to apply jumpers. different color lines are givven to identify all tracks saperatlly.
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