Kenmore freezer not cooling

Kenmore sidebyside freezer not cooling, after g-son left freezer door partially open for hours. Do you think I could correct the problem by simply turning off the freezer, to defrost any ice buildup on the condenser coils. How can I see if the coils have ice buildup. What part would be affect if door is left open for hours. I read the other related threads and made a troubleshooting checklist. Thanks, Aloha

Hi.

Try to unplug the fridge for 24hrs with both doors open.

Simon.

I will try defrosting the freezer/refrig this weekend, easy & free. hope it works

Please post the results.

Simon.