02 - High Current before ON - iPhone Motherboard Repair Center

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Return to course: Semester Two 2021 – 2025

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Semester Two 2021 - 2025

Student Section

Email Notification
Logs

Heat Control Level 2

01 - 11 Pro Max NAND
02 - 5S NAND Removal and Reinstallation
03 - XS NAND Removal without Baseband board

Thermal Camera Class

01 - Choosing a thermal camera
02 - Thermal Camera
03 - My Setting
04 - Which Thermal Camera Do I Use? (2023-2025)

NAND and Programming Tools

NAND Flash intro
NAND programming tools
NAND System Config
Recover SN WiFi BT Address
Recover Factory Codes (2022)
NAND BGA-315

Power Up

Intro
01 - Power Up Circuit
02 - High Current before ON
03 - No Respond
04 - Low Current Response
05 - Current Drop after press

Boot Up

01 - Boot-up Troubleshoot
02 - Restore Firmware
Basic Knowledge Test

Measurement Techniques

01 - NAND Measurement Tips
02 - Fake Resistance Value

Restore Error

01 - Restore Troubleshoot
02 - Hard Disk Failed
03 - Restore Process Error
04 - iPhone 14 Series Restore Error: The Hidden Issue
05 - iPhone 15 Plus Restore Error: Another Hidden Issue

Activation

01 - Activation Problems

Circuit Lines

01 - Reset Line
02 - i2C
i2C exam
03 - Voltage Divider
04 - Clock Line
05 - RFFE

USB and Charging

01 - SWI
02 - USB Detection
03 - Charging
04 - Tigris
05 - Charging Evolution
EXAM: USB and Charging

Display and Touch

01 - Display Circuit
02 - Backlight Circuit
03 - MIPI Lines

Face ID

01 - Troubleshoot Face ID
02 - Dot Projector

Baseband

01 - Intro and Rules of BB
02 - SIM Circuit
03 - Qualcomm Baseband
04 - iPhone 13 BB Repair
05 - Skill Verification of Baseband Repair

Network

01 - Frequency Bands
02 - Transceiver
03 - RFFE
04 - Common Network Problem

Beginner's mistakes

01 - Same line vs Same section
02 - Should we repair the missing dot?
03 - Stop Removing Logic EEPROM

BONUS lessons

01 - LCD bypass

NOTE

Essential Knowledge for iPhone Logic Board Data Recovery & Repair

02 – High Current before ON

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