Thank for reply Sparky obtained used main board from 55C65O so now working but will not play previosly recorded items says DRM Protected has anybody a schematic for main board in these sets or similar boards i would like to attempt tracing fault on original any help much appreciated. Regards Rolec PS (Has anyone tried changing model no in service menu on these sets as the 40/46/55 boards all work but show wrong model obviosly)