We'll show you how to reset a 2008 Panasonic Viera TV to its factory settings. Keep in mind that this will erase all tuned channels.
To convert these TVs to Smart TVs, you can use one of the following devices connected via HDMI:
https://amzn.to/3g26pbj (Fire TV Stick)
https://amzn.to/34ezUUV (Fire TV Stick 4K)
https://amzn.to/32yVItK (Fire TV Stick 4K Max)
https://amzn.to/33MB6iw (Xiaomi Mi TV Box S)
To watch HD channels, you'll need an external HD digital terrestrial television (DTT) receiver like this one: https://amzn.to/48ljRju