Vivo Y21D Charging Solution DP DM ID Thermal Ways Diagram Not Charging Fix USB Type-C Repair Guide

In this video you will learn Vivo Y21D charging solution, DP DM lines, BAT ID line, thermal line ways diagram, and complete hardware repair guide. If your phone is not charging, fast charging not working, USB not detected, charging paused, or battery temperature error appears, this guide will help you diagnose and repair the fault step by step.

We explain VBUS power line, Ground line, DP DM data lines, BAT ID line, Thermal line, charging connector pins, and motherboard charging circuit troubleshooting methods. This video is useful for mobile repair technicians and beginners.

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🛠️ 30 Step-by-Step Repair Instructions
Power off the phone
Open back cover carefully
Disconnect battery connector
Remove charging board
Inspect USB charging port
Clean charging connector
Check VBUS line continuity
Check Ground line continuity
Measure charging voltage
Inspect DP line
Inspect DM line
Test DP DM continuity
Check BAT ID line
Measure BAT ID resistance
Check Thermal line
Inspect charging connector pins
Check charging flex cable
Locate broken tracks
Apply jumper if required
Test for short circuit
Check charging current
Reinstall charging board
Connect battery
Connect charger
Verify charging icon
Test USB detection
Test fast charging
Check battery temperature status
Perform final charging test
Confirm stable charging operation
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