Please replace the power supply for testing. The power specifications of each product are as following sheet. 

If the problem doesn’t solve after replace the power supply, the piano/keyboard need to replace power switch or motherboard. Please contact support@smartpiano.com.


Note: If The ONE Light Keyboard won’t turn off, you can replace the batteries or power supply for testing（Don’t mix old and new batteries, and don’t mix battery types）. 


Product

Power Adapter

TOK1

Input: 100-240V ~50/60Hz 0.6A Max

Output: 12V == 2000mA

Output Power：20w

TOP1/TOP2

Input: 100-240V ~50/60Hz 1.5A Max

Output: 15V == 2500mA

Output Power：15*2w

TON1/NEX/T98

Input: 100-240V ~50/60Hz 1.5A Max

Output: 15V == 2500mA

Output Power：15*2w