hi
thanks for your reply
yes,i've already tested all you told me,i think its the battery fault too,since the begining i got an problem withe the right trigger button (always as pushed)
i opend it and saw the battery, not well isolated,pushing the button
i think,i should find an new battery,but my dingoo is brand new,less than 1 year old and only 2 charges since the begining