That HDMI connection hub port it some how got short and it dead.Tries other HDMI connections hubs.If all are like that they are all dead.All HDMI hubs ports connections are link together.If one dies usually all HDMI hubs dies together.Than ur tv Tuner signal board will not have anymore HDMI hubs functions connections at all,none of the HDMI hubs will work again ever.Have happen to mine Samung tv,so now i have to stop using HDMI hubs all together.
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