I purchased a KLH KL-2400, second hand, but in seemingly excellent condition. There is no sound through the connected speakers, though the sound is clear as a bell through the headphone jack. I do not have a remote, and worry that there is some function enabled that needs to be disabled with the remote, although it's just a guess. I do not have a manual, so I cannot tell how to reset the receiver, or otherwise solve the problem. I am hoping to either find a copy of the manual, or to find out how to reset this receiver.