Strategy One: No Backlight, Dim Image — The power of the smart TV is normal; it may be that the TV's driver backlight circuit is malfunctioning, causing the screen to go black with sound. When you get close to the screen, you can notice that it displays a very dim image, which proves that the signal processing part of the driver board isThe issue with the television is typically due to a malfunction in the function circuit of the high-voltage control board for the backlight, which, once the faulty circuit is repaired, restores the TV's image.

2. The TV screen goes black, the buttons are unresponsive, and the indicator lights do not illuminate (5V fault).

Countermeasure Two: Overload of the 5V voltage, pulling the voltage too low, or issues with the downstream signal processor, causing partial circuit damage. In this case, it is necessary to individually inspect and replace the faulty components.In addition to identifying and replacing defective components, restoring the voltage is achieved upon replacement.

3. Televisions are experiencing incompatibility issues with software use, leading to system crashes and black screens.

Issue 4: Black screen with sound during online playback.

TV BaseThis structure

The TV assembly is primarily composed of modules, mainboards, power boards, logic T-CON boards, speakers, buttons, indicator lights, and functional modules. The modules are mainly responsible for the TV display, the mainboard controls the module display and processes input signals, the power board primarily powers the TV (converting 220V to various required voltages), the logic board mainly processes signals from the mainboard to module display signals, the speakers are primarily for built-in sound playback, and the indicator lights mainly indicate whether the startup process is functioning.