Well sometimes, due to the connection problems, the dock won't react here either so I have to disconnect tablet from the dock and connect it again.
I think you probably tried that.
Does it charge the tablet when dock is connected to the mains?
Sent from my superfast Asus Infinity TF701with Dock
1 x ONE M8 latest ViperOne / S-Off
1 x ONE M7 latest ViperOne / S-Off
1 x One X: S-Off with Hox+ batt on VENOM VIPER-X 4.0.7. Sense 5
1 x ASUS Transformer Infinity TF700 with dock on CROMi-X 5.3a
1 x NEXUS 7 2013
1 x Sensation Elegancia ICS Rom
1 x HD2 WM 7.8 Rom
Returned 4x due to build quality issues ASUS Transformer Infinity TF701 with dock