LCD screen

After my problems with the power supply, LCD screen now shows no value, but is on, I can do?

Adjust the trimmer on the control board until you see something.

A potentiometer that you mean?
I tried it with a keyboard via midi and sounds great, but still does not appear on the screen data.

No, you need to adjust the blue trimmer in the top right corner of the digital board. It sets up the contrast of the LCD module.

UUooooo Now riiiiiiight
Thank you very much for everything
Finally I have my Shruthi-1

I love Shruthi-1