とりあえず稼働時間と周辺温度から考えても
CPUの温度の高さが気になるんだが・・・

室温20度

-------------------- show uptime --------------------
System uptime is 7 hours 7 minutes
System woke up by reload, caused by command execution

-------------------- show environment --------------------
Internal temperature measured at +46.0(C)
+3.3 volt line measured at +3.251(V)