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When was the replacement done? The technician should be able to warranty his work for for 30 days. So, if they do we would have the tech come back.
We usually will replace the evaporator fan assembly kit when we replace the board. This is because GE's need them both done usually (if the board has failed).
If he did not do this then, you will likely be having to replace the borad and the evaporator fan kit to do this fix. If they aren't going to cover it (the tech), then it would be expensive to do all over again. So, if the unit is more than 7 years old we would advise that you consider a new refrigerator which will save you electricity (and money).
Let me know if you would like more information or clarificatiion.