Hi - having issues receiving proper signal to TV in back Bedroom. Living Room and outside is fine. With cable, bedroom TV can only find 4 channels (living room TV finds 70 or so) - with antenna air it finds channels digitally fine. Just guessing it may have something to do with splitter or connections but do not know where it is. I have turned off & on the Weinguard booster switch and that does not seem to be it. Can anyone help?