Uno R3, Windows 7.
Just received this board today, it won't upload sketches, I get this error back:
"avrdude: ser_send(): write error: sorry no info avail"
Correct com port and board selected. I tried changing the com port in device manager from com 3 to com 5, same result.
TX and RX lights blink when trying to upload.
Tried the loopback test. TX and RX lights flash when typing a character, but will not echo back.
Tried another USB cable. Same result.
Anything else I can try before I ask for a replacement from the supplier?