Common Technical Issues in Modern Televisions Across All Brands

 

Common Technical Issues in Modern Televisions Across All Brands

Modern televisions—whether Samsung, LG, Sony BRAVIA, TCL, Philips, Hisense, Xiaomi, Toshiba, Haier, Panasonic, Konka, or MGS TV—share a unified electronic structure. For this reason, their most common failures tend to look surprisingly similar.

1. Black screen with sound

This is the most common failure.
Backlight LEDs stop functioning, leaving the picture completely invisible.

2. TV won’t power on

Usually related to a power supply fault or motherboard malfunction.

3. Boot loop / stuck on logo

Common in Android TVs such as TCL, Xiaomi, and Sony.
Typically caused by corrupted system files or damaged internal memory.

4. Horizontal or vertical lines

Often traced back to a malfunctioning T-Con board or poor panel communication.

5. Slow Smart TV performance

A result of system overload or internal memory degradation.

6. HDMI issues

Faulty HDMI circuits cause the television to lose signal detection.

Summary

Although each brand markets unique technologies, most TVs rely on the same fundamental systems—making their weaknesses easy to identify and understand.