Anyone have trouble with the blu ray?

TWICE during the movie, the audio just...dropped out. Dead silence. Nothing. I solved the problem by backtracking to before the audio shut off and hitting play, and then it went smoothly. But I don’t want to have to backtrack in those two spots every time I watch the movie—especially since the second time is right at the end during Gordo Cooper’s launch. But what’s the problem? Is it the disc? The blu ray player? The HDMI cable? The TV? How do I diagnose the problem? I guess if it happens with another disc, that will pin it down slightly. But all I can think of to do is to watch the entire three-hour movie again and see if the same glitch occurs in the same spots. If so, I’ll just return the disc for an exchange. Since I haven’t had this problem with other discs, I hope it’s that simple—but it might be across the board in every print of this blu ray. If so, I’m just out of luck. I haven’t found any other complaints, so I’m hoping it’s just a defect on my disc.