Yamaha RX15 Digital Drum Machine For Sale. 1980s. This unit was sold to us as working perfectly but it wasn't. The cost of this item plus servicing costs have easily exceeded its worth. After servicing, we discovered that the clear button is a bit intermittent. Pushing its right side usually activates it, but pushing its left side sometimes doesn't. We can't justify spending any more money on this unit at its current price. If you'd like us to sort out the button issue for an additional fee, please email us to discuss. Also note that contact issues are very common with this model. We spot and disclose issues most other sellers either don't notice or just don't mention, so odds are the others people are selling have this issue but they didnt spot it or report it.