This seems to happen on a daily basis now and I have no idea why it happens. My Wii U works as intended and I can play it for hours on end. However after a play session with it and going to sleep I notice the power light flashes red. I've seen it happen once and I wrote it off as a possible power failure in the middle of the night but now this has happened at least 5 times now and in order to use my Wii U again everytime this happens I have to disconnect the power and replug it in and that seems to fix the issue temporarily. Any explanation what's going on and how I can fix it for good?