Buffalo WBR2-G45S自己POWER OFF左再ON唔返

本身用緊Buffalo WBR2-G45S無線router... 同埋一支Buffalo WLE-HG-NDR發射天線...
平時都唔會switch off... 因為另一部desktop PC隋時都會用隻Buffalo USB Wireless Adaptor (型號唔記得)上網...

今日返到屋企發現個router switch off左... 因為佢無on/off制... 咁我就pull off個電源再plug in...
結果唔著... 再試都係一樣唔著... 當時個router已經唔暖... 應該switch off左一段時間...

請問大家經驗,知唔知個router咩事?
1. Router因為長期著住所以燒左?
2. 火牛燒左?