I use the A6300 a lot for video and use a large power bank that I connect to the USB port. I discover that there is no voltage on the USB data bus (D- and D+) only 5 volt on the original Sony USB power supply when I measure, but there is a small voltage on the databus pin 2 and 3 (d- and d+) on powerbank's and other USB power supplies (see photos), could this damage the camera?