JVC AV-28GT1SJF Service Mode?

[Zero9X]

Hi,

I was wondering if someone could please tell me what buttons do i need to press in order to access the service mode on this tv. I the picture isn't filled entirely on the screen, so i would like to align it using this mode.

many thanks for your help.

[gary]

goto main menu then press 4,7,2,5, on the remote, set is fitted with vestel 11ak45 chassis manual for which is available on this site