Redmi Note 11T Pro+ Dead Solution (2025) | Full Input-Output Voltage Check | No Power Fix Guide
If your Redmi Note 11T Pro+ is dead, not turning on, or showing no power response, this complete repair guide will help you diagnose the fault using input/output voltage checks, common failure points, and step-by-step troubleshooting methods used by professional mobile technicians in 2025.
⭐ Why This Guide Helps
This post includes:
- ✔ 2025-updated dead solution
- ✔ Full voltage test points (IO/Input/Output)
- ✔ Battery & PMIC (Power IC) checks
- ✔ Short-circuit tracing
- ✔ Easy-to-follow steps
- ✔ Beginner + expert friendly
🔧 1. Basic Checks Before Hardware Repair
Before opening the phone, perform these quick checks:
✅ Check Charger & Cable
Use a good 5V/2A charger. A faulty charger can mimic a dead device.
✅ Try Force Restart
Press and hold:
Power Button + Volume Down (10–15 sec)
Sometimes fixes system hang issues.
✅ Check Battery Connector
If the phone was dropped or opened before, the connector might be loose.
⚡ 2. Redmi Note 11T Pro+ Voltage Test Points (2025 Updated)
Use a digital multimeter.
📌 Battery Connector Voltages
| Test Point | Expected Voltage | Status |
|---|---|---|
| VBAT | 3.7V – 4.4V | Normal |
| GND | 0V | Ground |
| VPH_PWR | 3.7V – 4.4V | Must be present |
If VBAT is 0V or very low, battery is fully dead → replace battery.
📌 PMIC (Power IC) Input Voltages
| Line | Expected Voltage | Meaning |
|---|---|---|
| PP_VPH_PWR | 3.7–4.4V | Main power input |
| PP_BI_SYS | 1.8V | Boot-level power |
| PP_LDO1-6 | 1.2V / 1.8V / 2.8V | PMIC regulators |
If PMIC has input but no output, the Power IC is faulty.
📌 CPU/BOOT Voltage Lines
| Voltage Line | Expected Output |
|---|---|
| VDD_MAIN | 3.7V–4.4V |
| VDD_CPU | 0.8–1.2V |
| VDD_GPU | 0.9–1.1V |
| VDD_MEM | 1.1–1.2V |
No voltage here → PMIC, CPU short, or power rail block.
🔍 3. Common Dead Issues in Redmi Note 11T Pro+ (2025)
🔥 Issue 1: Short in VPH_PWR Line
Symptoms:
- Phone dead
- Board heats up while charging
Fix:
- Use short finder
- Apply low voltage and check hot component
- Replace shorted capacitor or IC
🔋 Issue 2: Battery Over-Discharge
Symptoms:
- 0V battery
- No charging icon
Fix:
- Boost battery to 3.7V using DC power supply
- Replace battery if not holding charge
⚙ Issue 3: PMIC Failure
Symptoms:
- No output voltages
- No boot reaction
Fix:
- Reball or replace PMIC
- Check surrounding passive components
🌀 Issue 4: Corrupted Boot Line
Symptoms:
- Dead phone after update
- No logo, no vibration
Fix:
- Check 1.8V & 3.0V lines
- Reflash firmware (if slight boot response)
- Hardware repair if full dead
🔥 4. Step-by-Step Dead Repair Procedure
Step 1: Connect to Power Supply
Set at 4.2V.
- If 0A consumption → main line open
- If high amp draw → short circuit
Step 2: Check All Voltage Rails
Start from:
- VBAT
- PMIC Input
- PMIC Output
- CPU rails
- Display/boot rails
Step 3: Find Short Circuit
Use:
- Freeze spray
- Multimeter diode mode
- Thermal camera (best)
The first heating component = faulty section.
Step 4: Replace Faulty IC
Common replacements:
- PMIC
- Charging IC
- Power line capacitors
- Shorted components
🛠 5. Final Solution Summary
✔ Full input/output voltage test
✔ Battery boosting for 0V issue
✔ PMIC replacement if no output
✔ Short detection and clearance
✔ Boot rail restoration
This guide covers everything needed to fix:
Redmi Note 11T Pro+ Dead | No Power | Input/Output Voltage Solution 2025