DAEWOO TV

Daewoo LCD TV SL-110P Type DSL-20D1T Service  Menu
Turn on your television and press key one, mute STATUS, MUTE in sequence five to seven seconds.
Picture: 4, option: 5. Change value press volume +/- and select press program +/-
Exit and save settings press and hold down the mute button for 2 seconds.

DAEWOO TV.Alcuni models 
When you turn on the TVC, press the following sequence of buttons on the remote control: (1 - mute - recall - mute).  Some models do not have the recall button, press it with the button display.