VS-880EX, VS-890, VS-880: Tracks 7 and 8 don't work ?
If the Status buttons for tracks 7 and 8 don't light up at all, any color, you have created a song in MAS (Mastering) mode. MAS (Mastering) mode is a 6 track, 16 bit song. Quality comparable to CD players and DAT recorders. If you want to use all 8 tracks, you will need to create a new song.
Note: Tracks cannot be copied or imported from one song to another on the VS-880, 880EX or 890.