Attempting to connect Sony KDL-40EX40B TV to Panasonic SC-HT05 HTIB. If I use RCA works fine. Coaxal from DVD to HTIB give 5.1 sound. Fiber from TV to HTIB works for 5 or 10 minutes then cuts out. May be accompanied by a chicking noise. Since it works for a few minutes I would assume it is getting the signal okay. I have verified no kinks in the line and have tireds two differant fiber cables.