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Hi , I`m Jack , a TV/AUDIO repairman with 40 years experience. Perhaps i can help you with this , please let me know when you are ready to proceed
What is connected to this tv ?Cable box,satellite,dvd,games etc. ?
Most important , how are they connected ?
HDMI or color coded component cables ?
no problem , we`ll figure this out.You tried an optical cable at the back of the tv ?
Your cable box should have one of those as well , did you give that a try ?
I meant optical out port
May be a problem with the bar then
Ever heard any sounds out of that bar ?
O.k then this is a setup that stopped working , not a new one ?
Could that be a vizio sound bar by any chance ?
Sorry about that , my internet provider decided to shut down while we were talking
Just try a reboot for now , pull out the power cord and drain residual voltage by holding down any of the buttons on the bar for 20 secs or so