There are two main reasons for the problem of hearing only the audio but seeing no video when playing a song.
1. The song has been added to JB-199, but has not been registered. Go to MENU > 1.Jukebox > 3.Register. The total number of unregistered songs will appear on the screen. Register the songs by pressing the Right Arrow button. When done, exit MENU and play the song.
2. The song has been added from another JB-199 hard drive or some hardware, such as the main board, in the JB-199 has been replaced. In that case, go to MENU > 5. System Control > 9.NCG File Protection. Turn OFF the item by pressing the Right Arrow button. When done, exit MENU and play the song. Please note that the line 9. NCG File Protection has been added recently into the JB-199 program. If you do not see the line in the MENU, please go to www.cavsusa.com and upgrade the JB-199 program to the New Release with the latest version.