Home › Forums › Microcontrollers › PIC Microcontroller › 16×2 LCD and PIC 18F4550 › Reply To: 16×2 LCD and PIC 18F4550 July 11, 2016 at 9:30 pm #12686 Ligo GeorgeKeymaster It can be frequency problem, noise problem etc. Try reduce the wire length to LCD if you are using long wires and also try adding more filtering capacitors.
