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Most amps from that era have an HDMI for video that serves as 'pass through' which is why you need a separate digital optical cable to get sound to your speakers. Connect the optical out directly to the AMP - no need to run it through the TV. Also -check the fiber ends - clean them with a fiber optic cleaner (or alcohol swab).
Besides the cable box, how are your other components connected? HDMI & digital optical cable as well?
There is a flexible glass tube in your optical cable - but it can only bend so much. If your cable has been bent then the tube will crack and cause data packets to be dropped. But I can't imagine all of your optical cables going bad all at once...
-Z
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2010 Cayman S - 12-2020 -
2014 MINI Cooper S Coupe - 05-17 - 05-21
1989 944S2 - 06-01 - 01-14
Carpe Viam.
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