Dual Cassette Karaoke Music System (320-1155) Troubleshooting Faxback Doc. # 19835 Q: Keep losing tracks while recording and dubbing. May have to dub four to six times before final product is obtained. A: Need to make sure that High Fidelity Stereo Tapes or Karaoke Tapes are being used. This unit will not record Mono Tapes or Voice Tapes. If the problem persists, send the unit to service. (IR-02/29/96)