I cannot get any sound from the kenwood dnx6140. How can I get the problem fixed at home? I bought it in a garage sale and now I am repenting my decision. Can you give me a sound advice on repairing it? I cleaned the head the connection. The cassette is turning the red indicator light and moving. The tuner is a kenwood dnx6140 purchased at the same time but the cd player works great. Will you please help me?