Before you entering Sony TV Bravia KDL 26B4030K 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.
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SONY BRAVIA TV KDL 26B4030K Service Adjustment mode.
Set the television to ANALOG mode.
Press power button (Standby Mode) in your tv remote control.
Press "I+", "5" and volume up and "Power" button
Use program up/down to select and volume up/down to change the value.