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The tx led of arduino uno is always on and the board can't be programmed(programmer not responding) - Installation & Troubleshooting - Arduino Forum
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Arduino: Arduino Uno's RX and TX lights not blinking. Unable to upload sketches! (3 Solutions!!) - YouTube
![programming - Arduino UNO does not get recognized by PC(no USB connecting sound), also TX and RX not blinking, neither are lit - Arduino Stack Exchange programming - Arduino UNO does not get recognized by PC(no USB connecting sound), also TX and RX not blinking, neither are lit - Arduino Stack Exchange](https://i.stack.imgur.com/Jh66v.jpg)
programming - Arduino UNO does not get recognized by PC(no USB connecting sound), also TX and RX not blinking, neither are lit - Arduino Stack Exchange
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Brand new Arduino Uno won't upload and led on 13 blinks 4 times a second - Microcontrollers - Arduino Forum
![arduino uno - I'm using nRF2401 and in my transmitter and receiver the Rx is not blinking and Tx is blinking; why does Rx not blink? - Arduino Stack Exchange arduino uno - I'm using nRF2401 and in my transmitter and receiver the Rx is not blinking and Tx is blinking; why does Rx not blink? - Arduino Stack Exchange](https://i.stack.imgur.com/eeZTJ.jpg)