A friend wants to get his dual dj cd player working again. There is a crushed capacitor/crystal and I can't tell the value because its been soldered to the board and the solder almost covers the entire cap/crystal. There are two identical boards and the other has the same crystal or cap but it is soldered over as well. I'm trying to find a schematic for the board its on if possible. I'm sure this unit is similar to the several other dual cd models american audio sells. Any help appreciated. 