AirPlay LG TV PASSWORD
When trying to airplay on to LG SM8200PLA tv a password is requested. None is shown on TV and one is not set on TV.
MacBook Air 13″, macOS 15.3
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The AirPlay and HomeKit settings on your TV, should have options for asking a passcode (randomized 4 digits displayed on screen, to be copied on the sending device) or setting a password (an unknown default might be set initially). A new password can be generation by turning the password requirement off and on, or a custom password can be set.
Which LG TVs support AirPlay 2, and how to connect to AirPlay - LG Support
If it doesn’t work as expected, then try turning options off and on, to reset the options.
Also verify that the TV system software is up-to-date, for best support and fixes.