ge fridge

I have recently replaced the burnt out motherboard(my bad) on the fridge.The freezer side worked fine but the fridge side wouldn’t cool.The damper between the freezer and fridge isn’t working right I think.I puled off the panel in the freezer and took a hair dryer to clear off the frost and ice built up on the coils.After paying a repair man over three hundered bucks for replaceing the motherboard iam hopeing to get some help here to solve this new problem.:mad: