I have the complete inside electronics for a GF-1000 and the grills, the speakers subs and tweets and both cassette doors.
777 parts I have a cassette door and 2 output boards.
From the looks of it, unfortunately, it may be easier to find one in better condition that needs less work and use that as the parts box.
PM me if I can be of help.
J.
Hi have got the gf777 door , I would like to buy itHas anyone got a spare cassette door for gf777 ?