Have had my Mit STB for 18 months now and zero problems. Do not use anything to cool it but I do have it completely free of obstructions all the way around and have the unit set on 1 inch feet to let the air flow underneath. With most any equipment it is better (my opinion) to have free airflow completely around it; never in a cabinet. Of course, I realize this is not practical for many. But it has always worked for me.
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