For major brands like Sony, LG, or Samsung, the remote often has dedicated brand keys. Turn on your TV. Press and hold the corresponding brand button
Press and release the button repeatedly. The light will flash each time you press it. Stop immediately when the Volume Symbol appears on the TV. Press the SET button to save the code. Method D: Automatic Code Search The most hands-off approach for unknown brands.
When contacting support, have the (found on the back panel or in Settings → About) and a brief description of the issue ready.
If your brand isn't listed on the numeric keys, use a specific code from the manual's code list.