When your favorite Xiaomi TV suddenly stops showing a picture, it can knock anyone out of their way. You turn on the device, the light goes on, maybe even the sound is working, but the screen is completely black. You shouldn't panic at this point, because in most cases the problem lies in a software failure or incorrect settings that are easy to fix yourself, but you can't ignore the symptoms either, because sometimes this is the first sign of a serious hardware malfunction.
The first thing to do is to do a primary diagnostic to understand the scale of the problem. Often, users are faced with the fact that the TV just “hangs” in standby mode or can not properly start the Android TV operating system. In this case, the screen goes out, although the device is technically turned on. If you hear the sound of channels or applications, but the image is not, the range of possible causes narrows to problems with backlighting or video output.
In this article, we will discuss in detail all possible causes of the disappearance of the image on Xiaomi Mi TV and Mi Box. We will look at both simple software solutions and complex hardware breakdowns that require expert intervention, you will learn how to perform a full reboot, check cables, update firmware and determine when it is time to carry the device to the service center.
Software failure and system reboot One of the most common reasons why the image on Smart disappears TV from Xiaomi, is a software failure of the operating system.Android platform TV It can be stuck in the process of updating, installing an application or background synchronization, visually it looks like a black screen, although the TV can continue to play sound or respond to the remote buttons, and to solve this problem requires a forced reboot. Unlike conventional button-off, this method forces the system to go through a full boot cycle, re-initializing all drivers, including video output drivers. On many Xiaomi models, you need to press the power button on the TV body itself (not on the remote control) and hold it for a period of time. 10-15 A few seconds before the Mi logo appears. If the screen is black, but you're sure the system is working (sound is heard), try calling the settings menu or task manager with a combination of buttons on the remote. Often it helps to combine Back + Home or hold the off button on the remote for a long time with a choice of "Reboot". If the interface responds but the picture does not appear, the problem may be in the screen resolution. What is Safe Mode on Android TV?Safe mode is the state of the operating system, where only the basic drivers and system applications are loaded. If in safe mode the image appears, then the problem is caused by a third-party application or widget.
If software methods didn't help, it's probably the hardware. The most common hardware cause of a black screen when sound is running is malfunctioning. LED-In the modern world, LED-In televisions, the image is formed by a matrix, but it is illuminated by the lamps at the back. If even one lamp in the chain burns, all the backlight can go out for safety reasons. If you see a picture in bright light, but without backlighting, the screen is black, then you need a replacement. LED-This is a medium-sized repair that requires disassembly of the matrix, and the second most common is a T-Con malfunction of the board, which is responsible for transmitting the signal from pixels to pixels. Symptoms Probable cause Repair difficulty Black screen, sound is, flashlight shows menu Faulty LED-Backlight Middle (requires disassembly) Black screen, no sound, indicator flashes Problem with Main Board or power supply High (need diagnosis) Vertical stripes or ripples Damage to the matrix plume or T-Con High (risk of matrix damage) Image is, but very dim Degradation of lamps Medium (replacement of tapes) 💡Replacing the backlight is the most frequent repair when the black screen is done, and you only have experience with the fragile matrix, because you have a high risk of breaking it.