Hello! Thank you so much for posting about this. I certainly understand your concerns about the TV having audio issues. I'll be more than delighted to assist with this. Some TVs have an HDMI cable test. Some models only have this test after a software update.
To perform the test, make sure the TV's source is still on the HDMI setting for the cable you want to test, and then navigate to Settings > Support > Self Diagnosis > Signal Information > HDMI Cable Test > Start Test. Also, you can try connecting to a different device. Using the same cables, connect a different device. If there is no more audio dropout, then the issue is caused by your external device that was originally connected.
If the issues still occur
I recommend letting a service technician have a look. As we would like to gather additional information and look at this from a case-by-case basis, please provide the full model code and serial number of the device as well as your best contact phone number, name, and email.
