My Arduino Uno R4 Minima started smoking after connecting to a computer. I disconnected it and visually checked it and I saw this bubble as shown on this photo.
Can I recover my Uno from this to still use it or do I have to throw it away?
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That's the buck-converter that connects to the external power supply.
The board should still work when powered by the USB cable.
Remove R11 to isolate the blown circuit if you like.
https://docs.arduino.cc/resources/schematics/ABX00080-schematics.pdf
jsotola
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The marked IC is burnt. You should complain to the seller and claim warranty. if it is still within the warranty period. If you are very skilled at soldering. You can try to replace the IC.
tepalia
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