I'm trying to help a friend, he has a nord piano 2 but it does not start, after turn it on, all the LEDs and displays turn on and off quickly (like a flash), Only LCD display remains illuminated displaying a sequence of square characters (such as character 219 of the ascii table) on the first line, no other LEDs on the panel light up, no buttons work, and no sound.
Link youtube to show the problem: https://youtu.be/dYd6VlidvlA
Watch on youtube.com
Is there a procedure that can be done to restore or can it be a hardware problem?
Best Regards,
Fabio Vianna
Rio de Janeiro
Brazil