Lilygo-t-display-s3 board overheating problem in wi-fi scanning or connection attempt

[murat-kaya]

Hello,

I have an overheating problem with my newly ordered lilygo-t-display-s3 device from Amazon (Original).

I think the application "factory" was installed for demo purposes. When the application starts searching for a wifi network, there is an excessive heat accumulation on the smd large capacitor on the back and then this heat goes all the way to the processor/screen etc.

My power source is pc usb port, type-c and standard output with 5v.

All outputs on the circuit seem normal (I don't know the exact references), there is an average voltage of 4.62 and 3.28 (depending on the output type of regulator) in multimeter and oscilloscope measurements. I couldn't read exactly 5.0V and 3.3 but I accept this as normal?

What could be the reason for this heating? The weather is cold right now but if I want to use it in an IoT project, it will definitely burn in hot weather with this over heating.

[lewisxhe]

By directly measuring the working current, you can determine whether the board is working normally. When WiFi is turned on normally, the average current is about 150mA+, and the heat center is in the ESP32 chip. If it is in other areas, there may be a problem.