Hi guys!
After connecting the two boards yesterday to an amplifer I felt confident to finally solder the LCD. At my first try, the LCD lit up but there are no characters.
After reading the wiki I started doing this:
Turn the screw of the trimpot R21 counterclockwise until you have reached the end.
The problem is that the trimpot does not seem to have an end. I have turned like sixty times! And the LCd stays the same with only background light.
What should I do? As I said, LED and sound test went fine. Please note that I bought it 2 years ago.