It’s the first time that i notice problems with lcd, I’ve already played with this stuff with more complex board without having any problems.
But now I’m using a Arduino clone (Here the link http://www.gravitech.us/arna30wiatp.html) from a few days and it was working with an old LCD with green backlight, but somehow it has started to loose contrast only on the right side of display and on the startup phase the common black blocks on the first line was shown only on the right part with 8 char on the first line and the other 8 on the bottom line.
Anyway since it was working I thought to replace lcd with a brand new and tested before one with blue backlight but the same controller and size.
In the first try the image in attachment is appeared on my display.
I’ve checked twice all the soldering and connection in general, I’ve also disconnected the ethernet and the RFID reader from the circuit without any success.
Someone have found tha same issue in other way?? and please someone have an idea of how to solve??
Thanks a lot to everybody have the patience to help me