Anet v1.0(?) Mainboard

source: anet3d.com

Stepper Driver

Connectors

Voltage

If only Fan2 is running an nothing else has power (no LED on the board and the LCD is off as well), check the 5V power at the marked point. If you can't get 5V, the voltage regulator might be broken. See Anet v1.0 Power Upgrade