CASIO LK-73 KEYBOARD POWER SUPPLY REPLACEMENT ADAPTER UK 9V 712221881640 | eBay
HQRP AC Adapter / Power Supply compatible with Casio LK-73 / LK73 / LK-90TV / LK90TV Keyboards
Amazon.com: MaxLLTo™ 6 FT Extra Long AC Power Replacement Adapter for Casio LK-40 LK-50 LK-55 LK-73 LK-90TV LK-200S LK-210 Keyboard Charger Power Supply Cord : Musical Instruments
9V AC/DC Power Adapter For Casio LK-40 LK-50 LK-55 LK-73 LK-90TV LK-210 Keyboard - Walmart.com