Before you entering Goodmans 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.
Goodmans LCD TV GTV26W3
Press "M" button and you will Go to main menu,
press 4, 7, 2 and 5 to open factory mode. Select parameter use program button and change value use volume button.
Use program up and down to select parameters.
Use volume up and down to change the value.
Exit from factory mode press TV and power button on remote control.