Powers up and all functions work, see video. I haven’t tested it with sound as I don’t have the cables, when I source some I will try it and post a video. When I purchased this the batteries were still in the bottom, (very old batteries) one has leaked and that had caused the paint to come off the bottom. See pictures. I have not tampered or opened this unit up. See pictures for general condition. I have tested with headphones and seems to work fine. Not really sure how to work it myself. See video Any questions please ask. UK only.