Repair Solution of Redmi 9 Prime and Poco M2 Dead Problem

When the customer comes to you with a Redmi phone and says that the phone is switched off by itself automatically. That is a common issue with Redmi 9 Prime, the phone automatically turns off during use or while booting up. This frustrating issue is also a common problem in Poco M2 smartphone models. This problem is fixed by mobile phone technication using an intelligent trick.

Redmi 9 Prime Poco M2 Auto Switch Off

🚨 Redmi 9 and Poco M2 Common symptoms of auto switch off:

• The phone automatically switches off during use. When immediately put on charge, it gets hot.
• When we check phone charging on a USB ampere tester charger, the phone shows charging stats as normal.

Automatically switches off

• This problem often goes unnoticed until tested on a DC power supply, where the Redmi 9 Prime begins to draw high amperage, indicating a hardware-level short circuit.

Redmi 9 and Poco M2 Dead Condition Cause

The dead condition in the Redmi 9 Prime is caused by a faulty resistor near the 4G Power Amplifier IC on the phone's motherboard signal section. When the resistor is shorted or damaged, the phone starts consuming high amperage during charging, leading to unexpected shutdowns. Below is a comprehensive guide to understanding and resolving this dead condition with a professional repair method.

Repair Solution To Solve Redmi 9 Dead Problem 

By using this simple repair trick, the phone can be restored to normal function without expensive repairs. Advantages of this repair method:

✅ No need to replace the Power IC

✅ Quick and effective solution

✅ Prevents motherboard damage from overheating

✅ No extra components needed—just remove the faulty resistor

By using this simple repair trick, the phone can be restored to normal function without expensive repairs.

Step 1: Disassembling the Phone

• Turn off the phone and carefully remove the back cover.
• Disconnect the battery, camera, and other sensitive components to avoid damage.
• Remove the shield covering the 4G Power Amplifier IC in the signal section (Do this carefully to prevent damage to other components).

Step 2: Identifying the Faulty Resistor

The faulty resistor

• Locate the 4G signal section on the motherboard.
• Near the 4G PA IC, identify a small capacitor with two resistors placed below it.
• The resistor closest to the IC (on the inner side) is the one causing the issue.
• Use a microscope or magnifying glass to inspect the resistor.

Note: You can also use bitmap diagram in the schematic tool to find the 4G signal section on the Redmi 9 prime motherboard

Redmi 9 Prime motherboard

Pro tip: If you are a beginner and don't know anything about mobile schematic diagrams and their diagram tools, read my blog page, Maximizing Productivity with Best Schematic Diagram Tools for Mobile Repairing. It is free information on the topic

Step 3: Removing the Faulty Resistor

• Carefully desolder and remove the faulty resistor using a hot air gun or soldering iron from the phone motherboard.
• Ensure that only the problematic resistor is removed while keeping the rest of the circuit intact.
• Clean the area properly after removal.

Clean resistor removed

Step 4: Checking the Phone’s Power Stability

• Reassemble the phone and connect the battery.
• Power on the phone and observe if it boots up without shutting down automatically.
• Test the phone with a DC power supply to confirm that it no longer consumes high amperage unexpectedly.

Reassemble the Poco M2 phone

Step 5: Final Testing

• Check the phone’s performance under different conditions:
• Normal usage (Calls, Apps, etc.).
• Charging behavior (Ensure it does not overheat).
• Long-duration power-on test (Let it run for some time to confirm stability).

Some additional studying resources for my readers:

Learn to solve the Redmi 9 Bootloop problem, read more

Xiaomi Redmi Phone Repair Guide by Muhammad Asif Azeemi enhances your Redmi mobile repair skills. This eBook offers step-by-step troubleshooting instructions for issues like dead phone, charging problems, auto restart, network issues, LCD faults, audio glitches, and software errors. It also provides practical guidance on using advanced tools and detailed diagrams for repairs.

Quickly repair Xiaomi Redmi 9A with comprehensive guide. Learn to identify common issues effectively.

Conclusion

This repair method is a practical and effective way to fix the auto switch-off and dead condition in Redmi 9 Prime and Poco M2. By identifying and removing the faulty resistor near the 4G PA IC, the phone can function normally without unexpected shutdowns. This approach is efficient, low-cost, and reliable if executed carefully. If this guide helped you, consider sharing it with other mobile repair enthusiasts.