Couple of years ago, had the same thing happen. Started with a blown fuse on the board. Had a burn spot. Replaced fuse. Worked for a bit but then stopped working. Worked only on propane. You prbly don't want to hear the rest but I ended up with a new cooling unit and board. Mine was 10 years old at the time with all the recalls done. Every unit may not be the same but I saw your price estimate? with labor? of the board at $325.00. Saw some listed at $195.00. Rv Cooling Unit Warehouse. They're on Ebay/the net. Its where I got mine. I replaced it myself and I'm not a repairman. Ended up replacing both when cooling unit failed.