Programacion

https://www.sony.com/electronics/support/remote-controls-remotes-for-tv/rm-ez4/articles/00012375

How do I program a new remote to my Panasonic TV?

Simultaneously press the "Power" and "Action" buttons on your remote. Hold the buttons down for five full seconds before releasing. This enters the remote into programming mode. Press the first device button and enter the corresponding code.

https://smallbusiness.chron.com/set-panasonic-remote-code-59245.html

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Sonu
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This remote controller is not a universal model; so it won't work on your Panasonic TV. As you didn't provide your TV's model number, I can't refer you to a universal remote that will work. You'll need to find that out from the remote's documentation or from its manufacturer. Or just call Pasasonic to buy its replacment remote. (Use the contact information at https://www.contacthelp.com/panasonic.)

The best solution is probably to purchase an "OEM" remote not offered by Panasonic--which is less expensive than the one Panasonic provides, but should be functionally identical; go to https://codesforuniversalremotes.com/replacement-remotes-for-tvs-oem/. Otherwise, try https://www.replacementremotes.com/ or https://www.remotes.net/, being sure the remote will meet your needs before you buy it.

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