Hello
I bought a used Antminer S3 but the user and password "root" doesn't work. The previous owner must of changed it.
Anyway to reset it?
Check Dogie's guide at
https://bitcointalk.org/index.php?topic=702653. There is a reset switch accessible from the front panel, next to the 2 LEDs and Ethernet connector. You power it up, press the reset button through the hole using a paper clip or similar thin object, hold it for 5-10 secs. This will reset it to factory defaults, including the password.
Cheers
Are the lights suppose to change when pressing the button? They all stay lite, like pressing it does nothing.