Okay, so I've got a bit of a doozy here. I have my Yamaha A550 hooked up to my Oppo 103 and Samsung F5300. Whenever I switch from a 5.1 track to a 2.0 track, I get these pops and cracks in the right TV speaker.It does this even when the TV speaker is disabled from the TV's menu. It is also disabled in the Yamaha menu. No audio is being sent to the TV, only video. Now if I switch the Oppo from Bitstream to PCM it doesn't do this at all. But my region free player doesn't decode DTS-HD MA or TrueHD in 5.1, so I have to use bitstream on that player. The only thing running to the TV is an HDMI cable from the HDMI Out on the receiver. I hooked a BD player up directly to the TV via HDMI and got no sound with the TV speaker enabled. Yes, I have tower speakers and a proper 5.2 system. Even if the TV volume is all the way down and the TV speakers disabled both in the TV and any output from the receiver to the TV I get the crackle when switching audio tracks or from bitstream to PCM on the Oppo running through the Yamaha. It's within warranty and I contacted Samsung. They said they'd get back to me within 48 hours. I'm guessing there's just a loose wire or bad speaker in the TV? The picture is fine, no problems there. Honestly, if it wasn't for the crackling, I wouldn't even be bothering since I don't even use the TV speakers.