Before you entering Sigma tv 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.
Sigma China TV
Press simultanously volume down and recall button on the remote control.
You will see the factory mode on the television screen and you may enter to B/W Balance by pressing the volume down and recall button again.
Select the parameter press program up or program down and to change the value setting press volume up or volume down.
To change color and geometry press recall and volume down to enter geometry settings.
Save and exit from factory mode, press RETURN button on the remote control and turn off the TV using power button on the remote control.
Photo credit : lanite.com