I just received a new epad, zenithink 180. The brightness control does not respond at all. Therefore the screen locks but never dims down or becomes dark. I have tried everything to adjust the brightness but it simply will not respond. I tried to reset it using the reset button but no go. I even tried to flash the firmware 1030 but that did not resolve it either. Funny but I have not seen anyone on the forums with this issue. Can anyone help? With the screen in full brightness the battery dies quickly. Thanks in advance.