If the blue window is displayed on a black TV screen with the message 'This video output does not work in HD mode.If there is no picture on the TV screen, video mode on TV and STB may not be matched - enter Bootloader menu - off/on STB power and press Menu key on the remote control (the screen remains black) and change the STB video mode by pressing F1 key.On TV: сheck socket ( HDMI / RCA) to which the cable is plugged and make sure that the setting of the source is correct.Ensure that cable is in good condition.Make sure that the cable is securely connected on both sides (TV and STB).Problems with the video interface cable (HDMI, RCA):.Check the power supply for parameters specified in the STB user manual.STB power supply unit is not working properly or has not suitable parameters (this case, STB LED can be lit):.Make sure that both devices (STB and TV) are connected to the power supply.No power supply at Set-Top Box or TV or one of the devices (STB or TV) does not work properly.
