I have a S4 B1 and S4 B2. The S4 B1 is working great but the new B2 that i got in a couple weeks ago worked great for the first few days now I cant get it to hash more than a couple hours. The box would stop hashing but it would stay on, the fans on with a blank (but lit) LCD screen.

I re-seated the SD card and it worked for about 10 hours and started doing the same thing. It works if I turn the power off and turn it back on, but only hashes for a couple hours.

I got a new SD card and flashed the image from the original SD and that worked for a few hours and then it stopped hashing.

I emailed tech support and they sent me an image that I flashed to the new SD card and the same issue.

This is frustrating! I know it works, I just dont understand why it keeps stopping.