Some Panasonic TVs require the Power key on the original remote control to be held down for a couple of seconds to turn the TV on. To solve this issue another key can be programmed with the Power function.
From within an Activity on the Nevo app (for example Watch TV), tap the settings (gear) icon on the top right and select Edit Keys and select a key that you don’t use from one of the three main screens.
Next select Function and from the list select Power or Power On. You can now return to the Activity by pressing the Back arrow on the left and that key will now send Power and you can hold it down as on your original remote.