Before you entering Grundig Arganto factory mode to change any value on the factory service mode, please write down all the original factory settings. tvservicemenu are not responsibility for any damage, data error and unwanted effect after using our service code and information on these page.
Grundig Arganto 70 TV Service Menu-mode
Turn On the Television, decrease volume to minimum (0). Press mute buton and keep hold the key. Additonally press mute buton on TV pannel, the mute sign on the screen is go to yellow colour. Software version show on the screen. Press menu to select and volume buton to change data value. Save setting press recall and exit press STILL.