Why does your element TV have a black box that come on the picture screen from time to time and this appears a white boc the divide sign HNDTJ4?

The black box with the white "HNDTJ4" divide sign on your Element TV likely indicates that the television is displaying a message or information from the broadcast signal, such as a closed captioning feature or a specific channel identifier. This could also be a glitch or an issue with the signal being received. To resolve this, try checking the settings for closed captions or resetting the TV to see if the issue persists. If it continues, consider contacting customer support for further assistance.