I recently bought a Kenwood Home Theater package that came with a VR-615 receiver. A week later I purchased an optical cable on eBay that I have connected to my PS2, which I use as my primary DVD player. About a week ago I began to have problems with my receiver reading digital signals. The sound will randomly flicker on and off. I thought it was my receiver's auto detect function so I switched to detect only digital feeds but I've still had the same problem. Can anyone help? Is the problem n my optical cable, player or receiver? The entire system is just over a month old. Any help would be greatly appreciated.