Trace the line to the secondary charging IC. Verify if V_BATT power is outputting back to the battery terminal. Display and Backlight Issues
⚠️ Ensure you match your specific board ID (MediaTek vs. Snapdragon) before applying hardware jumpers. Motherboard Architecture & Key Test Points vivo y93 schematic diagram download verified
Ensure the Transceiver IC is receiving its clean 1.8V analog power supply rail from the PMIC. Trace the line to the secondary charging IC
Detailed layouts for the charging flex, which includes the Micro-USB port, microphone, and vibration motor contacts. Common Hardware Repairs Using Diagrams Vivo Y Series Motherboard Schematics | PDF - Scribd which includes the Micro-USB port