My Fridgidaire FSC23F7DSB7 began warming to high 2 weeks ago. Both the freezer and fridge section were to high. After a repair call and service it was determined that the control board was shot and needed to be replaced. After the part came in $250, Which I now know was too much. I replaced the board and things seemed to be working just fine for about 5 days. Now, Just within the last 48hrs the freezer is running too cold -10 degrees and the refridge is running to warm 53 degrees. I checked the temp settings and I have the temp controls on the factory recommended settings freezer 0 and refridge 37. Any suggestions??? what else could it be?