How to Diagnose Faulty IC in Smartphones – Beginner’s Guide

What is an IC in Mobile Phones?

An IC (Integrated Circuit) is a tiny chip inside your mobile phone that controls specific functions like charging, audio, display, power, and network. Each IC plays a unique role, and if even one fails, the phone can stop working properly.

Common ICs in smartphones include:

• Power IC

• Charging IC

• Network IC

• Audio IC

• Display IC

Common Symptoms of a Faulty IC

If you notice any of the following issues in a smartphone, there’s a high chance that an IC might be at fault:

• Phone not charging

• No network signal

• Audio not working during calls

• Overheating of motherboard

• Display not turning on despite power

Learning to spot these symptoms is the first step in any mobile repairing course.

Tools Required to Diagnose IC Faults

At Mobile Guru Advance Tech, students get hands-on training in real labs using professional tools like:

• DC Power Supply

• Multimeter

• Schematic Tools (Mooxy App)

• Hot Air Blower

• Microscope

You can also explore our detailed post on the best tools used in mobile repairing to know more.

Step-by-Step: How to Diagnose a Faulty IC

Here’s a beginner-friendly process:

1. Visual Inspection

Check for burnt, cracked, or bulging ICs. Burn marks are an obvious sign of damage.

2. Check Voltage Using Multimeter

Compare actual voltage levels with schematic readings (Mooxy App can help). An abnormal reading indicates a faulty IC.

3. Use the DC Power Supply

Connect the motherboard to the DC power supply. If it shows abnormal ampere readings without power key press, there might be a short circuit or bad IC.

4. Heat Method

Gently apply heat using a blower. If the issue resolves temporarily, the IC is likely faulty.

5. Freezing Spray Test (Advanced)

Apply a cooling spray; the IC that warms up quickest is usually faulty.

Want to Learn Mobile IC Repairing Professionally?

At Mobile Guru Advance Tech – Bhopal, we offer chip-level mobile repairing courses designed for beginners and professionals. Our students benefit from:

• Real-world Practical Labs

• Expert Faculty

• Mooxy App Training (India’s best schematic tool)

• Affordable Mobile Repairing Course Fees

Why Choose Mobile Guru Advance Tech?

We are among the top-rated mobile repairing institutes in Bhopal, and our certifications are industry-recognized. Whether you're a 12th pass student or a working professional, our mobile repairing courses will help you build a career without a degree.

Final Thoughts

Learning to diagnose faulty ICs is a critical part of becoming a certified mobile repair technician. With hands-on training and real-time diagnosis methods, you can master these skills at Mobile Guru Advance Tech.

Ready to get started? Enroll in our next batch now