I got a audio problem with my dvd burner when i watch dvd on it, somespot of the dvd have this scratchy distortion sound, but when i change the channel of the audio and then change it back, it become normal again, the spot where it happen are random, and the problem sometime happen again in about 30sec(after i adjust the channel), sometime 20minute, so i got no idea is it a software or a hardware problem.
i used
powerDVD to play the dvd
my burner model is LG 4040B 4x DVD Writer
thanks in advance