We were only able to test some functions on the unit and are selling it as is for repair. The satellite speakers were tested and are working. The CD player will open and close but we get no lights and it does not appear to read. The AMP and tuner are in working order. We were able to get FM through the headphones. We were unable to test the other connections due to lack of cables. We did get sound through the video and MD source inputs through headphones only. We are not accepting returns on this purchase.