DC Power Supply for Phone Repair | Full Explanation & Tutorial 📱⚡ In this video, we’ll fully explain how a DC power supply is used in mobile phone repair — from the basics of operation to practical testing and troubleshooting techniques. Whether you’re a beginner in phone repair or an experienced technician, this guide will help you understand how to use a DC power supply to diagnose, test, and repair smartphones safely and effectively. --- 🎯 What You’ll Learn: Introduction What is a DC Power