Channel Blow-out on AV Surround Receiver AV-R720

Forum Members,
Has anyone seen a problem with the front right channel blowing out on the Samsung HTIB system listed in the subject line? I bought 2 systems for different rooms and have had the front right surround channel blow out (always crackling sound) in both units. Replaced with higher end Pioneer Elite system and love it! Samsing has a good price point, but if the unit is NG after less than 1 year, it is not money well spent.
Please reply if this is a known issue and/or have any of you got Samsung confirmation of thus being a known issue for this model.
Thank you,

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