Your Xiaomi Redmi Note 8 Pro has stopped responding to the power button, the screen is still black, and the charging indicator is not on? This problem is familiar to many owners of the model released in 2019. The causes can range from a trivial battery discharge to serious hardware failures. In 70% of cases, the device can be “reanimated” yourself without going to the service center.
In this article, we’ll look at all the possible scenarios for why the Redmi Note 8 Pro doesn’t turn on, from software crashes to physical damage. You’ll get step-by-step photo instructions, video examples, charger compatibility tables and diagnostic checklists. We’ll focus on a specific model problem, the power controller failure after the MIUI 12.5+ update, which isn’t dokumented in Xiaomi’s official manuals.
Before you panic, check if the cable is plugged into the outlet, if the USB-C connector contacts are oxidized, if the power button is pressed too softly (the Note 8 Pro has a deeper sink than the other models in the series), and if these points are in order, we proceed to a detailed diagnosis.
1.Diagnostics: Why the Redmi Note 8 Pro is not included
The first step is to determine if your smartphone is responding to external influences, which will help narrow down the possible causes, so take a charger (preferably an original 18W charger) and do the following:
- 🔌 Connect the charger to the socket, then to the phone. Pay attention to the indicator: if it flashes red, the battery is discharged, orange is charging, green is charging completed.
- 🔊 Listen to this: Does the device make sounds (vibration) when you connect the cable. The Note 8 Pro has a characteristic short signal.
- 🔥 Check the temperature of the case: if it is heated in the area of the camera or processor - a circuit on the board is possible.
- 🛠️ Try holding the power button for 10-15 seconds – sometimes it works when the power controller is “hanging.
If there is no reaction, move to the next section. If the indicator is on or the phone is vibrating, the problem is most likely software (section 3). If the case is very hot, this is a critical sign that requires an immediate power outage (more in the block). ⚠️ below).
⚠️ If the case of the Redmi Note 8 Pro heats up above 50°C (unpleasant to hold), immediately turn off charging.This may indicate a short circuit in the battery or damage to the chip. MT6368 (Further attempts to switch on may cause fire!
2. Hardware causes: from battery to motherboard
If the diagnosis showed a complete lack of response, the problem lies in the “hardware”. Consider the TOP-5 hardware causes characteristic of the Xiaomi Redmi Note 8 Pro:
| Reason. | Signs. | Decision | Cost of repair (₽) |
|---|---|---|---|
| Battery discharged/blown | The indicator does not burn, the body is deformed | Battery replacement | 1 200–1 800 |
| The USB-C connector is damaged. | Charging is only in a certain position of the cable. | Replacement of the connector or soldering work | 800–1 500 |
| Oxidation of contact on board | The phone was turned on periodically, then stopped. | Cleaning with alcohol/ultrasound | 500–1 200 |
| Failure of the MT6368 power controller | Heating in the upper part, no reaction to charging | Replacement of the chip or the entire board | 2 500–5 000 |
| Damage after falling/hitting | Cracks on the body, the screen does not turn on | Diagnosis for plume breakage | 1 000–3 000 |
How to check the battery yourself:
- Remove the back cover (a plastic shoulder blade and a hair dryer will be needed to soften the glue).
- Examine the battery: if it swells (you can see the “bubble” on the lid) – you can not operate the phone.
- Check the voltage at the terminals with a multimeter: the normal value is 3.7-4.2V. If below 3.0V, the battery is dead.
What to do if the battery is swelling?
If you are not sure about your skills, you should contact the service, for example, replacing the MT6368 power controller requires a soldering station with precise temperature control (optimally 350-380 ° C), otherwise you can damage adjacent elements of the board.
3. Software glitches: from getting stuck to "brick"
If the Redmi Note 8 Pro responds to charging (lights, vibrates), but does not turn on - the problem is most likely software.
- 🔄 Failed update MIUI (particularly 12.0.x 12.5+).
- 📱 Application conflict (often after installation of modified applications) APK).
- 🔧 Reset to factory settings via Recovery, which ended in an error.
- 🛡️ Block the bootloader (if you tried to get root).
How to restore work:
Press Power + Volume Up for 10 Seconds | Connect your phone to your PC via USB| Download the firmware for Redmi Note 8 Pro (codename begonia) from MIUI Download | Use the Mi Flash Tool for firmware in EDL-->
For firmware through Fastboot, execute the commands:
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash vendor vendor.img
fastboot rebootImportant! If the phone is not detected by a computer, you will need to unlock the bootloader through the official Xiaomi tool (Mi Unlock Tool), a process that takes up to 72 hours (due to checking the Mi Account).
⚠️ Attention, firmware through EDL (emergency mode) erases IMEI and data in the section modemst1/st2. After recovery, check it out. IMEI team #06#. If he jumped on 0000000..., Recovery will be required through the Engineering Menu (##4636##*).
4. Specific problems of Redmi Note 8 Pro
The Redmi Note 8 Pro has a few unique “diseases” that are not found in other Xiaomi models:
- The MT6368 controller failure after the MIUI 12.5+ update manifests itself as a complete lack of charging response, although the battery is in good condition. The reason is the incompatibility of the firmware with the hardware revision of the board (especially for devices released in the first quarter of 2020), the solution is a rollback to MIUI 12.0.3.0 via Fastboot.
- The problem with the USB-C connector after using wireless charging. The Note 8 Pro doesn't have official Qi support, but some users plug in adapters. This causes the R1702 resistor to burn out on the board.
- Hall sensor failure (responsible for closing the magnet case). If the phone stopped turning on after using the magnet case, try extracting it. SIM-maps SD-card, then hold the power. + Volume up 20 seconds.
Critical information: If your Redmi Note 8 The Pro stopped turning on after the update to MIUI 12.5.1.0 Or, later, don't try to flash it through Recovery, which will result in a full lockdown of the bootloader. EEA (code begonia_eea_global_images).
💡
Before you run through Fastboot, turn off driver signature verification in Windows. To do this, restart your PC in the check-out mode (click F8 when booting and select "Disable Mandatory Driver Signature Verification").
5 What to do if the phone is turned on, but it is unstable
If you managed to “reanimate” the Redmi Note 8 Pro, but it:
- 🔋 Fast discharge (from 100% to 0% in 2-3 hours),
- 📱 It spontaneously reboots,
- 🔥 Overheating without loading,
- 🛡️ He doesn't see. SIM-maps or wifi,
So the problem is not completely fixed.
- Check the battery health through the engineering menu (#4636## → Battery information). If health shows Unknown or Dead, a replacement is required.
- Reset network settings: Settings → SIM-maps and mobile networks → Resetting network settings.
- For the Note 8 Pro, it is MIUI 12.0.3.0 (a stable version for begonia).
- Check the heatpaste. This model often has a dry interface between the Mediatek Helio G90T processor and the radiator, and the sign is heating to 60°C in plain.
💡
After recovery, the phone does not see IMEI, Don't try to manually type it through the engineering menu, it will lock the modem. QCN-File (requires an authorized Xiaomi account).
6. When to contact the service: prices and guarantees
If all these methods did not help, you can contact the service center, here is a comparative table of repair costs for the Redmi Note 8 Pro in Moscow and the regions (data for 2026):
| Type of repair | Moscow (₽) | Regions (₽) | Date(s) | Guarantee (month) |
|---|---|---|---|---|
| Diagnostics | 500–1 000 | 300–700 | 0.5–1 | — |
| Battery replacement | 1 500–2 000 | 1 200–1 800 | 1 | 6 |
| Repair of the USB-C connector | 1 200–1 800 | 800–1 500 | 1–2 | 3 |
| Replacement of the MT6368 Power Controller | 3 000–4 500 | 2 500–3 500 | 2–3 | 12 |
| Flashing through EDL (with unlocking) | 1 500–2 500 | 1 000–2 000 | 1–2 | 1 |
How to choose a service:
- 🔍 Check reviews on Yandex.Maps or 2GIS (especially pay attention to complaints about the loss of the product). IMEI» post-repair).
- 📋 Ask if you have a warranty for working with a power controller (many services refuse due to the high risk of relapse).
- 💰 Compare prices: if the repair costs less than $ 1,000 ₽, The risk of using non-original spare parts.
Official service centers Xiaomi in Russia (list on the website) charge for diagnosis from 1 000 ₽, They give you a guarantee of up to 12 months. Informal workshops are cheaper, but the risk of shoals is higher.
7 Prevention: How to avoid problems in the future
The Redmi Note 8 Pro will last longer.
- 🔋 Don't discharge the battery below 10%. This model has no protection against deep discharge, which leads to battery degradation.
- 🔌 Use only original chargers (or certified Quick Charge 3.0 support). Cheap RAM kills the power controller.
- 📱 Regularly (every 3 months) reset your cache via Recovery (Wipe Cache Partition).
- 🛡️ Do not install custom firmware without unlocking the bootloader - this leads to blocking IMEI.
- 🌡️ Watch the temperature: if the phone is warmer than 45°C, let it cool before charging.
Myths you shouldn't believe:
- ❌ «You need to completely discharge the battery once a month - this kills the Note 8 Pro battery (it has a Li-Po, not a Ni-Mh).
- ❌ «Wireless charging is safe" - this model has no protection against overheating during Qi charging.
- ❌ «Updates MIUI Always stable - version 12.5+ have a critical bug with a power controller.