Greetings friends: I have a Samsung MAx VJ550 sound system that recently ruined the optical drive and does not read any CD to take it to the technical service and they indicated that it has no solution and that I must change. They performed cleaning, greasing as directed. I noticed that it emits the reading light but does not identify any cd that is put on it. The problem appeared from time to time must be by use. I need the Part Number or code to buy the spare optical reader for that sound system. I am not an electronic technician but I understand something. Thanks in advance.