There is a method to help cool down TV box.
First, buy graphics card fan, USB power cord, and thermal paste. Second, practice by following these steps:
View attachment 11326
1. Disassemble the graphics card fan and remove the original power cord.
2. Solder on the USB power cord.
3. Install the fan.
4. Paste the thermal tape on the bottom of the box and stick the heat sink.
Hope it will help you!