Termperature Control

Question

I recently purchased a Danby model DKC586BL beer cooler. Unfortunately it doesn't keep the beer as cold as my last one ( an old Sears unit). The lowest set point on the digital display is 34 degrees. It then cycles between 34 and 37 degrees. I'd like to have a set point of 30 or 32; peferrably 30. I know beer freezes at 28 as the control unit went bad on this new unit and the display was showing less than 28 degrees. Danby replaced the control unit with a new one but the beer is still warmer than I'd like. Is there someway to modify the control circuit to allow for a lower set point?