Trace the lines from the FPC connector to the display driver IC. Check for capacitors that might be shorted to ground (check impedance on the connector pins). 3. Power Management (PMIC) and Dead Set Repair
Qualcomm SDM710. It manages processing, graphics, and network modems. nokia 8.1 schematic diagram
Find the backlight boost diode on the PCB layout. Measure the output voltage. If it matches the battery voltage (~4V) instead of ~25V, the backlight driver IC or the boost coil is defective and needs replacement. Case 3: Fake Charging or No Charging Trace the lines from the FPC connector to
: Specific measurement points for checking if the 18-Watt fast-charging circuit is functioning correctly. Connectivity Traces Power Management (PMIC) and Dead Set Repair Qualcomm
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