I have a Magnavox MDR513H/F7 DVD recorder that will not recognize line 1 input. On Line 1 is my DIsh 522 PVR. This setup used to work with my old DVD recorder, but it didn't have a built-in tuner. I have double-checked all connections and everything is correct. I can view and record TV stations on the tuner, but when I switch to Line 1 it just records black (no video or sound). I have tried this on both DVD and HDD mode. They both come out black. I have checked all the DVD recorder settings and it all looks good. I am using RCA connections from my PVR to the DVD recorder. I even did a factory reset and unplugged the unit from the wall for 30 minutes - same thing. What do I need to do? The new Magnavox DVD recorder will not recognize my Dish PVR on Line 1. This is driving me crazy!!