Oppo+a15+schematic+diagram+pdf+exclusive
Always use a good multimeter and a DC power supply. The schematic tells you where to look; your skill tells you how to fix it.
Many hardware repair groups share a "Library" of schematics. Search for "GSM Hardware Telegram." oppo+a15+schematic+diagram+pdf+exclusive
What is the of the phone? (e.g., dead, no display, no charging) Always use a good multimeter and a DC power supply