This thread has been open for over two weeks now without a single response from a comcast/xfinity employee??? I too have been dealing with the annoying intermittent buzz specifcally on the AMC channel. Glad its not my TV or speakers and seems to be more of an xfinity issue. Would be nice if someone like a CSR would at least acknowlege the issue... Hello, Xfinity, are you there?!
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