I bought one old sansui g9000 receiver .when connected speaker not sounding.through head phone no problem.Ido'nt have manual .what may be the problem . when changing the speaker switches no indication also coming.
Take a look at the back of the receiver and see if there are any connections labeled PRE OUT and MAIN IN. These connect the preamp section of the receiver to the amplifier that powers the speakers. Some of these have a switch next to them that can either be in the wrong position or be broken. Others require a connection be made between them. You can use any RCA audio cable to do this. Turn the receiver off before doing any of things.