Hey, got new interesting board on table, no liquid no burnt area. everything like new. Board not charging. but when using dc it turn on and working, but when i remove battery both ports 5v and 0.025A. and when battery connected 1 port is 5v and another is 20v 0a and still not charging, tryed 4 different usb controllers, every time same behavor. Where to start, what to do ?