I have a GE Profile, Model PSH23PSSC SV. The refrigerator side won’t go below 39 degrees even though we have it set at 37. The temperature fluctuates between 39-42 degrees. The freezer side is working properly. We already changed the main board and that did not make a difference. We turned it off for a day and then back on and the problem still exist.
This sounds like a definite air circulation issue. First thing I’d be curious about is if the door were left cracked open overnight at any point as this would cause a frost buildup at the damper assembly. If not then the next suspect will be a damper mechanism failure as this would prevent cold air from being properly circulated to the fresh food section. The damper assembly part number is [AP3958584](http://www.appliancepartspros.com/Appliance-Parts/ge-damper-asm-supply-item-number-ap3184950.aspx"AP3140379]AP3184950[/URL]. There is a damper door assembly part number . Also, there is a fan motor which could cause an issue. This part number is [URL="http://www.appliancepartspros.com/Appliance-Parts/ge-fan-chill-item-number-ap3958584.aspx). Many times, a frost buildup will cause the failure of one or more of these components. Normally, dis-assembly is necessary to determine what parts if any are required for repair. Holler back if I can provide any more assistance. =]