I can't take credit for this. Thanks to RoyElam.
Appears to be more of a workaround for the indicator light staying on, which is a problem I had and this remedy worked for me on my 4802X Ultra.
I just purchased my unit and it is running the most recent update, so the problem is not fixed in the latest update.
Turned off power save and left the screensaver on and now the light goes off when the screensaver comes on and TV is off.
RoyElam
TBS930:
On the 4800 (pre 2022 ultra) turn the screen saver off and power saver on.
On the 4802x (2022 ultra) turn the screen saver on and power saver off.
Thanks for this fix, worked for me, too.
I just bought the new Ultra and noticed the indicator light on all of the time. Never had this problem before now.
I turned off power saving mode, and when the screensaver came on 10 minutes later, the indicator light finally went off.