I recently installed a new Directv receiver along with a Onkyo dolby capable receiver. One of the two components seems to require some repair. Both tech supports blames the problem on each other. I thought I would try and see if the forum could provide their opinions on the issue. Issue: I have the optical out from sat. to the receiver along with s-video. I have the satellite set to dolby digital output. I receive all satellite stations clear with good surround sound. When I'm watching HBO and a movie that is dolby digital comes on, the picture has waves and shows some sort of interference (surround sound is great). Sometimes the picture will flicker to clear but I then lose sound through the speakers until it reverts back to an unclear picture. Any help will be greatly appreciated.