Tested and working with the power cable. It did not work with batteries. I’m not sure if it Deb cause my batteries were bad or if it doesn’t work at all with batteries. There is no batty acid residue. It’s unusual for something not to work with batteries but is working with the power cable. So it’s likely that batteries are too low on juice.

The power cable is not the original. It’s actual an old Nintendo power cable. It works with the keyboard.

Thanks!