Samsung DY-450 TV Service menu

Samsung DY-450 TV SERVICE MENU MODE
Open the remote control of Samsung Television (the board must have an identity.: D-19H), find the key hidden more below the key TV / VIDEO, it would go to service mode.

Use channel up or channel down to select and use the volume button to change the value data.

Samsung DY-450 TV Service menu

Photo credit : imactoy.com