I'm using a sling box M1 connected to a Samsung SMT-G7400 using the included start to composite video cable. When I turn off my TV the picture on my computer disappears and I receive an error code 2020 advising me that my box has lost it's connection with my TV, I still have audio. When I turn on my TV the error clears and the video returns. Does this mean that I must leave my TV turned on when I travel? I am often on the road for weeks at a time and don't like the idea of having my TV running the whole time..