Power light steady green If it is unlit, there is a power problem or the unit is broken. Check that the modem is plugged in and switched on. Power light red or amber The unit has discovered a problem. Try unplugging the unit from the TP-Link TD-8616 V7 Router and disconnecting it from all cables, waiting more than 5 seconds for capacitors to discharge and then connecting it to power again. If the power light goes green, then connect cables.[…]