If I may insert an observation, not necessarily helpful, but perhaps pertinent. Prior to the current update release which has caused substantial impact to many sets, my Sharp/ROKU TV had one (slightly) annoying characteristic with regard to the remote. When powered down, the set was substantially less sensitive to the PWR button than when it was on.
Once the set was on, the set was pretty sensitive to all buttons equally, including the PWR button. Once off, the set was remarkably less sensitive to the same PWR button press that just turned it off.
With the new update release to the ROKU software, this characteristic has apparently resolved, and the PWR button press to turn the set on is now at the same sensitivity level as when the set is operating.
If everything inside that set runs through the ROKU OS, anything, and I mean ANYTHING is possible.