P4 | beginner Mobile repair part 4 DC Power Supply Secrets: Find Hardware vs Software Faults Fast
Learn how to troubleshoot and diagnose mobile phone hardware and software issues using a DC power supply. In this tutorial, we cover how to test deeply discharged batteries, check battery connectors, identify full and partial short circuits on the motherboard, and diagnose boot loop or stuck-on-logo software faults.00:00 - Introduction: Using DC Power Supply for Diagnosis
00:18 - Testing Deeply Discharged Batteries
00:45 - Checking the Power Button & Battery Connector
01:07 - Reverse Polarity Test for Battery Connectors
01:46 - Diagnosing Motherboard Short Circuits (Full & Partial Shorts)
02:49 - Common Causes & Symptoms of Short Circuits
03:06 - Detecting Software Faults on Older Feature Phones
03:26 - Detecting Software Faults on Smartphones (Stuck on Logo)
04:23 - Summary & Outro
**In this video, you’ll learn:**
- How to test discharged batteries and check battery connectors
- How to test for motherboard short circuits before pressing power
- Normal vs. abnormal current readings on feature phones and smartphones
- How to identify software faults when a phone is stuck on the boot logo
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#mobilerepairingtraning #Mobile Repair #dcpowersupply #DCPowerSupply #phonerepairtutorial #SmartphoneRepair Receive SMS online on sms24.me
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