GoTab Lite problem

Hi, I have a GoTab Lite and i put the wrong charger in by mistake. Now my Go Tab will not charge or even turn on. An icon of a plug with and open flap on it and a red exclamaton mark appears on the screen. Would like to know if I have broken my tab beyond repair. I tried resetting it, there is a smalll hole at the back for dong this (well I presume this is where reset button is!). Can anyone help. Thanks.