Turn the "Master Volume" to zero. Switch on the rear "Power" rocker switch, then press the front "Standby" button.

A: Yes. Appendix B (Page 24 of the original manual) shows a solderless replacement. The crossfader is a standard 30mm Alps fader. You pop the top panel, unclip the ribbon cable, and snap in a new one.

Connect the speakers using the proprietary multi-pin connector. Note: Tighten the locking rings by hand only – over-tightening breaks the plastic threads.