: Identifying the JDS-040 charging port daughterboard as the culprit or tracing power back to the main board's PMIC.
: Unlike earlier models, the JDM-040 uses a conductive sheet that is not interchangeable with the later JDM-050 or JDM-055. It features specific alignment pegs and a unique layout for the button contacts.
Based on the analysis of the JDM-040 schematic, we recommend:
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: Identifying the JDS-040 charging port daughterboard as the culprit or tracing power back to the main board's PMIC.
: Unlike earlier models, the JDM-040 uses a conductive sheet that is not interchangeable with the later JDM-050 or JDM-055. It features specific alignment pegs and a unique layout for the button contacts.
Based on the analysis of the JDM-040 schematic, we recommend: