have you ohmed out the bin or evaporator thermostats?
if the evap thermostat is not accurately gaging the temp of the eval it will not keep it cold enough to make the ice.
Please check that and you will know if it is good or not. if it checks good then replace the computer. if it doesnt ohm out correctly and within specs then replace that for that is most likely the problem.
please get back to me here if you have more questions or need any further clarification.