I have an Amiko 7900 and had the same problem but only when the receiver was connected to the TV with a scart cable. If yours is the same setup then you can fix it by connecting the receiver to the tv with a HDMI cable then press MENU, PREFERENCES, A/V CONTROL and then change 'video output' from CVBS to RGB. The menus will then appear via the scart output too. Hope this helps, if you're not using a scart then you have a different problem.