: Specific gold pads on the board used to measure voltages without desoldering chips. 2. The PCB Layout & Board View
Locate the sub-board FPC connector on the schematic. Oppo A15 Schematic Diagram Pdf
Checked at the USB input test point to verify charging port health. 3.7 V - 4.2 V : Specific gold pads on the board used
Bypass the OVP IC if shorted, or replace the sub-board flex. Blown backlight fuse or bad step-up diode Oppo A15 Schematic Diagram Pdf