I have tried a USB into my router, I have also tried setting up a DLNS media server on my local network. Both worked but only for a short while then exactly the same issue as with a usb direct connected. The stationary wheel of death. My conclusion is that the problem is with the operation of the smart hub functionality and NOT the USB connection itself,
My TV is now with Samsung who have agreed to "repair" it free of charge (thanks to the intervention of my retailer) and I await its return but I have no idea when that will be.
Anyone with direct link to samsung person to fix my tv. It wont read or load usb drives on all ports. But tv recognises device is connected. But wont load or open. My tv is is less than 2 years old. I hardly use it
read the posts on this forum for the last month. All your questions answered.
Power the TV off at the wall socket, wait 10 minutes then power on - all should then be working, but unfortunatly the issues you have will return within a day.
Please tell us all how it went for you.