Hello, I have a FMB automatic bar loader that is controlled by a GE Fanuc 90-30 PLC. It appears that the power supply on the PLC has gone bad and needs to be replaced. Is it possible to replace the power supply without losing the program in the PLC? If possible, how simple or complex are we looking at to replace. It appears that the Power Supply is not very expensive to purchase so I'm trying to decide if it's a problem I can correct myself or do I need to go ahead and bring in Ge Fanuc repair? Any information anyone can provide would be greatly appreciated.