I have the 10000 EB-U1200 power bank w/wireless charging. it was working fine for a couple years. Recently, It stopper charging up all together. I only see one indicator light flashes 5 times and then stays off and the other tiny light next to that flashes red, green and yellow. After that no lights at all. How can I fix this? I purchased this charger directly from Samsung. This was my dependable go to.