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https://www.audiotestserviciotecnico.com/tienda/tecla-si-b-yamaha-para-los-modelos-ds55-dx11-me50-mie1-psr90-psr6300-psrsq16-qs300-sy55-us1000-v50-ypr7-ypr9-ys100-ys200-hc2-ref148-copia/
Tecla Si (B) Yamaha para los modelos DS55, DX11, ME50, MIE1, PSR80, PSR90, PSR6300, PSRSQ16, SY55, US1000, V50, YPR7, YPR9, YS100, YS200, HC2, HC4 (ref:148)