I purchased an 8 track player with FM tuner off of eBay a few months ago. Believe it or not, it is brand new and was still packed in it's original box. There is a manufacture date of 1969 on it. I installed it in my Galaxie. The FM radio works fine. When I put an 8 track in it, I can hear the mechanism working inside the player...but no sound at all comes out. I tried switching tracks with no luck either. I have tried several different 8 track cartridges with the same results. Any ideas on what my problem could be?