Any ideas what else the problem could be? I've replaced all the cables, new balance board and still the same issue. This is the third charger A Main has replaced. Charging is fine but it will not balance.

Below is a video.

http://www.youtube.com/watch?v=6TOqyWdUlcY

Mine was just doing the same thing. I had the balance plug plugged in backwards into the charger! Doh! It's tough to tell from the vid but make sure you line up the black - wire on the board with the - symbol on the actual charger

Wow..can't believe I missed that. I thought it went in 'one direction' only because of how the prongs were positioned in the charger. (ie prongs were positioned low on charger, so I automatically thought I had use the lower part of the adapter since the pins were lined on the bottom)

Thanks

Yep definitely a design flaw!