If suddenly your tablet crashes and does not show video, although the sound is present, then problems can be with the monitor itself or with the presence or absence of some programs and applications. Let's understand in order.
Why is there no image on the tablet, but there is sound
If the tablet, when turned on, emits all the usual system sounds, and the screen does not light up, there may be several reasons for this:
- matrix malfunction;
- cracked screen;
- problems with the touch screen cable;
- problems with the video adapter.
In the first two cases, the tablet will have to be carried to a service center. You can try to insert the cable into the connector by yourself, but this should be done very carefully.
To check the health of the video adapter, you need to connect the tablet to any external screen via the video input. If there is no image on it, it means that there is a problem with the video adapter. If this screen shows a picture, the reason is different - in a matrix or a hardware failure.
What can be done independently if there is no image on the tablet
If the tablet works, but for some reason it stopped showing videos from the gallery or while browsing online, then the reason for this could be:
- or display modifications;
- either overlay.
The first problem occurs when the user changes the color temperature settings (F.lux, Twilight) or includes built-in functions in the display settings (for example, the Live Display in CyanogenMod), and also "dabbled" with color correction, color inversion or high-contrast colors. In this case, you should either delete the application or disable these functions. Perhaps after this video will appear.
Some overlays can also lead to image loss. These include application blockers (such as CM Locker) or design applications - it happens that they add controls on top of the main interface and even the parental control function. In this case, you need to try to delete these applications.
Attention! You can make sure that one of the applications is the cause of the black screen, you can download the device in safe mode. If the video in this mode shows without problems, then you need to find the problem application and delete it.
Not with all the failures can be dealt with at home, but some problems can still be fixed by yourself:
- Disconnect battery. By removing the battery, you will restart the system, which in some cases will be enough.
- Rollback to factory settings. If the first did not help, you can roll back the tablet settings to the factory settings. Most models have a reset button. How to use it is written in the instruction manual. If the reset button does not exist, you need to simultaneously press the power button and increase the volume. In the engineering menu on the screen, select the item "System Format". It is best to reset the settings, after having pulled out the memory card and the SIM card.
- Flashing If the second method did not help, then it is worth conducting a flashing - the most difficult of ways. It is most effective, but only by an experienced user. The rest is better for this purpose to contact specialists. Note that the flashing curve can lead to irreversible consequences.
Important! When you roll back to the factory settings or flashing, all games, photos, music stored on the device will be deleted.
As you can see, there can be several reasons for the black screen on the tablet. If your device is under warranty, then you should not try to fix it yourself - all problems associated with a malfunction, it is better to solve in a service center.
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