How to Convert a Disklavier DKC-800 Control Unit to a DKC-850
Convert a Yamaha Disklavier DKC-800 control unit to DKC-850 behavior with required parts, DIP switch settings, cabling notes, and cautions.
Disklaviers
Yamaha Disklavier repair, upgrade, and music-management guides from Alex’s Piano Service. Learn about Disklavier troubleshooting, floppy disk recovery, Nalbantov USB upgrades, PianoStream, firmware updates, power supply repairs, compatibility questions, and MIDI/E-SEQ tools for older and newer Disklavier systems.
Yamaha Disklavier Power Supplies: Diagnosing & Rebuilding
Diagnose and rebuild Yamaha Mark II Disklavier power supplies, including failure symptoms, removal tips, shipping, and repair options.
Disklavier DKC-800/850 Adapter (PJP-PS02 Replacement)
Replace the Yamaha Disklavier DKC-800 or DKC-850 PJP-PS02 power adapter with correct 12 V specs, sourcing notes, and surge safety.
When (and How) to Delete Cookies on a Disklavier DKC-800 / E3
Learn when clearing cookies helps Yamaha DKC-800 and E3 Disklavier login problems, and why firmware updates often matter more.
Why Disklavier Floppy Drives Fail (And How to Back Up Disks)
Learn why Yamaha Disklavier floppy drives fail and how to protect disks with backups, imaging, USB emulators, streaming, and recovery options.
Best USB Floppy Drives for Reading Yamaha Disklavier Floppy Disks
Find USB floppy drives and safer tools for reading Yamaha Disklavier disks, including 720 KB support, Nalbantov, and Greaseweazle options.
Choosing the Best Surge Protector for your Disklavier or Keyboard
Choose surge protection for Disklaviers, Clavinovas, keyboards, and organs, including noise filtering, insurance, and power safety tips.
How to Connect Your Yamaha Disklavier to Wi-Fi and the Internet
Connect Yamaha Disklaviers to Wi-Fi using a GL.iNet travel router for stable wired-style networking, streaming, and easier setup.
PianoStream: Streaming Upgrade for Digital Player Pianos
Learn how PianoStream works with Yamaha Disklaviers and other player pianos, including Bluetooth MIDI setup, audio, and compatibility.
Replacing your Blank LCD Screen in Earlier Disklaviers
Fix blank LCD screens in early Yamaha Disklavier control units by diagnosing capacitor failure, display problems, and replacement options.