08-12-2018 11:45 AM
08-13-2018 08:20 PM - edited 08-13-2018 08:22 PM
Hello, MichaelDuke, and welcome to the forum.
After reviewing the User Manual for this TV, it appears that pushing the power button after the TV has powered on will place it in standby mode, meaning it would still be receiving power. To completely disconnect power, you would need to unplug the power adapter as you suggested.
Although it doesn't appear this is a setting that can be changed, you may wish to attempt a factory reset by going to: Menu > Settings > Reset to Default. You would then need to set up your TV again using the on-screen TV Setup Wizard.
I hope this helps. Thank you for writing to us.