Something amazing has happened. The phone repair shop I sent it to decided to dig in deeper and tried desoldering and resoldering the chips on the pcb and amazingly got the device running. There is still a weird issue. I think the charging circuit/battery has had some damage. After first time charging it up from the repair shop, my dap went from 100% charge to 67% in an instant after powering up but since then it's draining normallly with regular usage. It even ran on standby without losing any charge. Anyone knows what could be the issue? Anyways, I am relieved that it is working. Saved me a lot of bucks.