Can a HDMI port go bad?
How can an HDMI port go bad?
One possibility would be corrosion of a contact until it is unable to transfer sufficient signal.
Another would be failure of the logic chips supporting the port, which could come from corrosion of their contacts, or corrosion or breaking of wiring connecting them.
How do I fix my HDMI port?
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HDMI Input Problems – TV Not Showing Image – TV Repair Help and
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Why is my TV not picking up HDMI?
Turn off all the devices. Disconnect the HDMI cable from the HDMI Input terminal on the TV. Turn on the TV and connected device again to let them recognise each other. If the issue continues, repeat the process but try a different HDMI input on your TV to see if this improves the situation.
How much does it cost to fix a HDMI port on a TV?
The cost to fix an HDMI port on a TV is $93 to $302. In some cases, the input circuit board that the HDMI port connects to may be damaged and need to be replaced. The cost for replacing this input circuit board, including labor, ranges from $200 to $350.