The maximum temperature of the radiator is 69.34 degrees at the connection point with the main control chip. The temperature of the power amplifier chip U9 on the front of the motherboard is 72 degrees, the main control chip is 70.8 degrees, the DA5 chip is 74 degrees, and the maximum temperature on the back of the motherboard is 1L5, which is close to 75 degrees. The temperature of the PCB board gets hotter the closer it is to the heat-generating components.