We have been dealing with an escalating audio issue where it will cut out and in the beginning it lasted a second or two, now with our 4K tv it’s very bad making movies unenjoyable. Xfinity repair guy I spoke with suggested I get a newer box as mine is a first production (XG1v1) and stated no new firmware or setting would remedy this issue. He suggested I get a version 4 (XG1v4) box that is streamline with no clock. I read a post on here that I was to ask for this self install kit, hopefully someone can help as the audio issue is very frustrating.
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