RE: Upgrade from JR X347?
It is difficult to guess at what may be wrong so it is impossible to know how much it might cost to repair. Lithium battery replacement is usually around $40 to $50, to repair the system, we would not know the cost without seeing the system. It could be as simple as a blown fuse, or it could be internal damage to the system. You can send it in and request an estimate if you would like.