Hi jgunsling!
Welcome! Thank you for posting.
It certainly is strange that this has just started happening randomly! The updates to the soundbar won't affect the remote controlling other devices for you so it is very unlikely to be that.
It sounds like you have done some great troubleshooting already by checking all the CEC options available. As it does not seem to be changing anything it does sound like it is the remotes IR signal turning on the TV rather than CEC controls, so thank you for finding that out!
Has the remote been programmed to control any other devices as well as your TV? If so have you noticed the remote turning those on as well? It is possible to make the remote send the power on code to multiple programmed devices at the same time so it would be useful to know if any other devices are being controlled as well.
To turn this off on the remote you would want to press and hold the TV button and the source button (AUX or the TV, DVD or Cable box icons) of any other devices being controlled for 10 seconds, until both buttons blink three times.
If for some reason this does not do the trick you would want to clear the programming from your remote and re-program it to control your TV. To clear the programming you would want to:
- On the remote control, press and hold a Source button (i.e., TV or CBL-SAT) until all six source buttons glow, then release the button: The button that was held remains glowing
- On the number keypad, enter 981: The source buttons will flash to confirm.
Once this is done, reprogram the remote following the instructions HERE and using the codes in the list for your TV.
Let me know how you get on!
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