John S Eudora , KS June 19, 2016 Appliance: Samsung Electric Range FER300SX/XAA-0001 Samsung Range Fer300sx/Xaa-0001 / : My samsung range digital display had many missing segments in the display. How to replace Assy Pcb Main;Led,Oas-Ag. I found the main pcb that included the display by using my model number. Your handy compatibility feature said the item was not compatible with my model as it showed on the appliance but was compatible with the same model number with some extra numbers added onto the end. I used the live chat option on the screen to see if it really was compatible after all. I like the compatibility option and the live chat even more to bridge the narrow window of hi-tech to common sense person. I ordered the part on Monday and had it Tuesday afternoon. Fit perfect and installed in about 20 minutes. Very pleased. 21 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes