Finally My MD Works But having LCD problem!

Finally my Megadrum is working but the LCD is only showing the top rows. Previously it was working. Megadrum is working without the LCD also. If I hit the pad the sound is played is MIDI-OX also in SAVIHOST + AD. But I don't know why the LCD is not working, I have checked for shorts, bad solder, changed the wires of lcd, etc.