hi there
welcome
I have moved this to the more appropriate repair section of the forum
Is it dead or repairable?
difficult to say with not a lot of info to go on
do you have a multimeter and know how to use it well ?
have you tried to open up the unit ?
if so, did you find any broken wires or corrosion from leaking batteries ?
if you have or do open it up, show us some sharp and well lit pics of the battery holder and circuit board
Dave