Not sure if i am having a problem with my pvr box, i tried watching tv this morning and my tv screen was blank. I clicked the guide on chosed a channel to watch and nothing came on. I then choose one of the PVR shows that i recorded and i was able to watch it. Not sure if the box is transmitting my cable to the tv. No warning or error codes are showing up either. I also have three other tv's in the home that have their own individual box and they are working fine... Help!!