Hi my brother dropped my beloved Dingoo A320 a while back and it hasn't worked since. Just wondering if I can get some advice on where to start to try for a repair. There is no obvious damage to the board except for one black wire attaching to the speaker has become detached. The unit is non-functional when using the battery but when connected via USB to a PC the screen back light will come and pressing the reset button will cause the unit to power-cycle. There's no sound and the PC doesn't recognize the Dingoo as a particular drive.
I have a multimeter, soldering iron and isoproyl spray. Any ideas where to start ? How can I safely test the battery?
Any help would be greatly appreciated.