I'm trying to use my Telus Wireless TV Digital Box, but when I power it on the TV, it shows no signal. The signal strength is good and the lights work. It also turns on and off. It just doesn't output a signal. We tried multiple different cables and 2 separate TVs. I'm starting to think my Wireless Box is broken. My Main Telus PVR box works. Model Number: UIW4001 Help?