Xiaomi Monitor G24 (Mi Desktop Monitor 23.8 or Mi Gaming Monitor 24.5 is a popular solution for work and gaming thanks to the combination of the new model. IPS-But even with such a reliable device, users sometimes face a problem: the monitor does not turn on when you press the power button. The reasons can vary from a banal lack of power to a firmware failure.
In this article, we will discuss all possible ways to turn on the Xiaomi monitor G24, Including forced modes, resets and hardware malfunction diagnostics, you will also learn how to distinguish a software failure from a power supply or motherboard failure, which will save time and money at the service center.
If your monitor turns on, but the light goes off or flashes without an image, there's a separate section at the end of this article to address this problem, and for convenience, we've added interactive checklists and a survey to help you determine the cause of the malfunction faster.
1. Basic method: activation of the power button
So let's start with the obvious thing: mechanical power. Xiaomi power button. G24 It's located in the lower right corner of the back panel (if you look at the monitor from the front:
- π Touch (on models 2022-2026 with metal body)
- π Mechanical (on earlier versions with plastic base)
To turn on the monitor:
- Make sure the power cable is connected to the socket and the connector. DC-IN monitor.
- Press the power button with one short press (do not hold!).
- Wait 3-5 seconds β a white indicator (standby mode) or the Mi logo (download) should light up.
If the indicator is not responsive:
- β‘ Check the socket β connect another device (like charging your phone).
- π Try another power cable (use the original one from Xiaomi or with similar options: 19V/2.1A).
- π Turn off the monitor for 1 minute, then try again.
β οΈ Attention: If the indicator flashes orange after pressing the button and the monitor does not turn on, this is a sign of a malfunction of the power supply or motherboardΒ».
βοΈ Pre-insertion check
2. Initiation through the signal source (HDMI/DP)
Sometimes Xiaomi G24 It doesn't turn on because there's no signal from the connected device (PC, laptop, console), and the monitor can stay in sleep mode even if the power button is pressed, so that the power button can be triggered:
Connect the signal source before the monitor is turned on:
- Turn off the monitor (hold the power button for 5 seconds if it is βhangβ).
- Connect the cable. HDMI or DisplayPort to a working device (for example, a laptop).
- Turn on the signal source (laptop, PC).
- Press the power button on the monitor.
If the image does not appear:
- π₯οΈ On PC/laptop, press Win + P and select "Duplicate" or "Second screen onlyΒ».
- π Try another cable or port (for example, HDMI 2.0 instead HDMI 1.4).
- π Check if the sound on the monitor is turned off β sometimes this blocks the exit from sleep mode (press Menu). β System system β Energy saving regime β Off.).
| Problem. | Possible cause | Decision |
|---|---|---|
| Monitor is turned on, but no image | No signal source selected | Press Source on the remote or Menu button β choose HDMI/DP |
| The screen is white but the screen is black. | Failure of firmware or matrix | Reset settings (section 4) or check the backlight (section 6) |
| The monitor is turned on and off immediately. | Overheating or failure of the power supply | Turn off for 30 minutes, check the ventilation |
3. Forced power-on (forced power-on)
If you have a Xiaomi monitor G24 It doesn't respond to the power button, but the light flashes or it lights up orange, and you can try a forced start:
- π Firmware freezes after update.
- π Failure in the supply chain (for example, after a voltage surge).
- π₯οΈ Video card conflict (rarely, but occurs when used) NVIDIA G-Sync).
Instructions for forced activation:
- Turn off the monitor.
- Hold the power button for 15-20 seconds (this will discharge the capacitors).
- Put the power back on.
- Press the power button once and hold it for 5-7 seconds until the Mi logo appears.
If the method has failed:
- π Try another power supply (e.g., from the Xiaomi Mi Desktop Monitor 27" monitor - it is voltage compatible).
- π§ Remove the back cover and check the fuse (Section 6).
β οΈ Warning: Forced start may reset user settings (brightness, color profile). If the monitor is turned on but the image is distorted, calibrate in the Settings menu. β Picture β Reset.
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If the monitor turned on after the forced method, but after a while it turns off again - check the energy saving settings in the System menu β Sleep regimen β Never.
4. Resetting settings to factory
Resetting to factory settings helps if Xiaomi monitor G24:
- π It is turned on, but immediately goes into sleep mode.
- π¨ Has distorted colors or artifacts.
- π Does not respond to control buttons.
There are two ways to discharge:
Method 1: Menu (if the monitor is turned on)
- Press the Menu button on the back.
- Go to Settings β System β Reset.
- Confirm the action (it may be necessary to enter) PIN-code - by default 0000).
Method 2: Hardware reset (if menu is not available)
- Turn off the monitor.
- Press the Menu buttons. + Source (or Menu) + Up on the joystick).
- Connect the power by holding the buttons for 10 seconds.
- Release the buttons when the reset menu appears on the screen.
After the reset, the monitor will restart, and if there is a problem, proceed to the diagnosis of hardware malfunctions.
What to do if the monitor asks for reset PIN?
5. Checking connections and cables
Often the problem is not the monitor itself, but the incorrect connection.
1. Power cable
- π Use only the original Xiaomi cable or with options 19V/2.1A.
- π Check the connector. DC-IN on the monitor β it should not hang around or have traces of oxidation.
2. Video cables (HDMI/DisplayPort)
- π₯οΈ Try another cable (preferably with support) HDMI 2.0 or DisplayPort 1.2).
- π Connect the monitor to another device (such as the Xiaomi Mi Box) to rule out a PC problem.
3. The connectors on the monitor.
- π οΈ Clean the ports of dust with compressed air (do not use wet wipes!).
- π§ If the plug HDMI or DP It may be a mechanical failure (requires repair).
If the monitor does not turn on after checking the cables, proceed to the next section.
π‘
80% of cases have a problem with the inclusion of Xiaomi G24 It's connected to a power cable or a video cable. Always start your diagnosis by replacing them!
6. Diagnostics of hardware malfunctions
If none of the previous methods helped, the problem is likely to be in the hardware. G24 and signs:
| Symptoms. | Probable cause | Decision |
|---|---|---|
| The indicator is not on, the monitor does not respond | Failed power supply or fuse | Check the fuse (F1, 250V/3A) on board or replace the power supply |
| The indicator flashes orange | The problem with the backlight inverter | Replacement of an inverter or LED tape (disassembly required) |
| The monitor is turned on and off immediately. | Chip overheating or motherboard malfunction | Check the cooler (if any) and the heatpaste on the chips |
| Image is there, but with artifacts | Damage to the matrix or plume | Diagnosis of the plume or replacement of the matrix |
How to check the power supply:
- Shut the monitor off the grid.
- Remove the back cover (unscrew 4 Torx screws) T5).
- Find the power supply (usually at the bottom left) and check the fuse (marking) F1 or FUSE).
- If the fuse is burned, replace it with a similar one (do not use "bugs"!).
Checking the backlight:
- π¦ Light a flashlight on the screen at an angle - if the image is barely visible, the problem is in the inverter or LED-lighting.
- π οΈ For repairs, you will need a soldering iron and electronics skills (or contact the service).
β οΈ Attention: If you are not sure of your skills, do not disassemble the monitor yourself! High-voltage inverter circuits remain voltage even after disconnection from the network.
7. firmware update (if the monitor is turned on, but it does not work correctly)
If you have a Xiaomi monitor G24 It turns on, but there are problems with image, sound or control β it may require a firmware update. Official updates are rare, but they can fix it:
- π¨ Distorted colors or incorrect color profiles.
- π Problems with sound (e.g., lack of sound through the HDMI ARC).
- π₯οΈ Freezes when connecting to certain video cards.
How to update firmware:
- Download the latest firmware version from the official Xiaomi website (Support section) β FirmwareΒ»).
- Unpack the archive and copy the.bin file to the flash drive (format) FAT32).
- Connect the flash drive to the port USB monitor.
- Go to Settings. β System system β Update the software and select the file.
If the update does not start:
- π Rename the firmware file to update.bin.
- π Use a flash drive of no more than 16 GB.
- π οΈ If the monitor freezes during the upgrade stage, reset (section 4) and try again.
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Before updating the firmware, take a photo of the current monitor settings (brightness, contrast, color temperature).