Greetings, All! I recently found a Kurzweil RG100 88key piano in need of a new home. The voices sound great and all of the keys work. The problem is with the right channel of the amplifier. All it gives is static. It's not the speaker because the same problem exists in the headphones and external speakers. Does anyone know where I can snag a copy of the schematic/service manual? My local music stores have offered little help. Help is greatly appreciated.