Bought a JVC 55 built in Roku a year ago. It has been working fine until about a month ago. It now turns of the wifi at 8:00pm and will not reconnect until. about 6:00am. I have unplugged router, tv. factory rest. all have failed to reconnect between the aforementioned time frames. The error code shows 003. displaying a hand with a watch and states try back in a few minutes. It will not reconnect to wifi until the next morning. Hope somebody has resolved this problem.
Have you perhaps set up your router to deny internet during those hours, maybe to limit children's access? Some routers have this capability, some do not.