CONDITION: Pulled from a fully functioning DGX-640. All capacitors, diodes, and regulators are stable with no bulging or burnt components. Power input jack and fuse are intact. No corrosion, no cracked solder joints, and shielding plate is firmly mounted. Shipped within one day of payment. ? DESCRIPTION: Original Yamaha DGX-640 power supply board (YC254) removed from a working unit. This board provides regulated power to all subsystems including the main logic board, LCD, key scanner, and amplifier. Features: ? Clean working pull ? Fuse, input jack, and connectors included ? No bulging capacitors ? No heat damage or discoloration ? Protective metal shielding included ? Board code: ?YC254 / #3244 AM? Ideal replacement for DGX-640 units that won?t power on, intermittently shut off, or show unstable voltage to other components. ITEM SPECIFICS: ? Part Type: Power supply / PSU board ? Board Code: YC254 (#3244 AM) ? Connectors: All harness headers included ? Fuse: 4A 250V installed ? Condition: Fully working pull ? Compatibility: DGX-640 ? Notes: No bulging caps, corrosion, or burnt components ? SHIPPING SELLER INFO: Ships fast ? 1-business-day handling. 30-day returns, USA seller. ? SEARCH KEYWORDS: yamaha dgx640 power supply psu board yc254 voltage regulator pcb