William P Ellensburg , WA March 10, 2015 Appliance: Model GE PSC23SGRBSS All led lit control buttons quit working only the interior freezer and refridgerator compartments lights would still work normally Replaced the main control board.. In order to be sure of the wire bundle locations, I took pictures and tagged each location with a brief location direction. There was one location on the new board for which I did not have a wire bundle. It was labeled a "P4" . On the defective board there was also a P4 but it did not have a four prong connector. I suspect that the newer version had a feature that was not available on my model. After installing and testing all components worked normally. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes