If your TV still powers on but is malfunctioning, follow these steps according to the Creamsource Knowledge Base and the board manual:

While official Vortex manufacturer links are often restricted to authorized technicians, you can find the firmware on community-driven electronics repair sites:

The firmware for the motherboard (1366x768 resolution) for Vortex LED TVs is used to resolve common issues such as the TV being stuck on the logo, having no sound, or experiencing a distorted display. This specific software is typically distributed as a .rar file and must be extracted to obtain the .bin or .sfb update file for installation. Download Resources

: If the TV is stuck on the logo, hold the POWER button on the TV panel while plugging it in. It should automatically detect the file and begin flashing.

: While the TV is ON, press MENU , navigate to the OPTION menu, select "Software Update (USB)," and press ENTER .