Jeprut

Opened the box, the circuit board and fuse are all fine, tried to bypass the fuse using a jumper. Nope, no luck...

I recently pull my batteries out of my Therion DNA 133 to check for the wrappings, then I charge it overnight using external charger only to find that my device won't turn on or even connect to escribe after I put the batteries back in. I even bought 2 pairs of new batteries with different brand just to check if my old ones are faulty, but still, no luck. Has anyone ever encounter / solve this problem, if so, would you mind letting me know? PS : Pardon my english since it's not my mother tongue.