Looks like my Viark Sat 4k has given up. I have had a few issues shortly after purchasing where the box firmware would lose HDMI signal. I had to go into TV and re select the HDMI channel. The firmware then started to freeze and the Viark become unresponsive, I had to unplug the receiver and turn it back on. This would happen every few days and now to the point as soon as the receiver is booted it instantly becomes unresponsive, although all lights are still showing. I have had the receiver just over 2 years and just renewed in January. I have tried 3 different PSUs so i can eliminate that as being an issue. Looking at purchasing another receiver but has anyone else experienced these issues or have any suggestions i can try?