With the S3 you should press and hold the reset button for 10 seconds then wait 3 min for the software to reset then re-boot the miner.
As said above this should re-set you back to the main window and default the IP back to standard.
You may wish to try hook the miner to your laptop or PC and manually set the IP
here is the step by step process to configure your AntMiner.
Start Button > Control Panel > Network and Internet (View network status and tasks) >> Change adapter setting (Left side of the screen) >> Local Area Connection (Double Click) >> Internet Protocol Version 4 (TCP/IPv4) then Click on “Properties” >> Select Use the following IP address:
Your S3 has a factory default IP address of :
192.168.1.99 and the Netmask of 255.255.255.0 and the Gateway 192.168.1.1
Set your computer's IP address to the following:
IP Address: 192.168.1.250
Subnet: 255.255.255.0
Default Gateway: 192.168.1.1
For the DNS Setting: Select “Obtain DNS server address automatically
If you still cannot find it on the network then the miner may have other issues.
One issues with the S3 miners if the mosfet driver not kicking in this will stop the board starting up when you turn on the S3 miner listen to it carefully you should here some sort of noise as the power kicks in and the fans spin up if there is not this noise the board may be bad and require fixing.
Feel free to hit me up if you need more help I am still a S3 user to this day!