Replacement PIC Microcontrollers: At the heart of each of our control boards is a pre-programmed PIC Microcontroller chip. Although these are unlikely to get damaged except in severe circumstances, we provide a full set of spares which have been pre-programmed with the relevant firmware for the board concerned. The PIC chip is fitted in a socket making it simple to change. In the event of the chip being changed it should be gently levered from its socket a little bit ata a time from both ends using a flat bladed screwdriver. Normal anti-static precautions should be taken when handling these chips.