I have one of those older Linksys routers. I think its a wrtg54. I might have the lettering off. The issue is this router is almost 10 years old and this week it has started to make hissing noises. At first I thought it was a snake or something but now its a constant hiss. I am worried this will catch fire or something before I can replace it at the end of the month. Any ideas as to why its starting to hiss all of a sudden? Keep in mind the room its in is not hot at all, nor is the router itself hot to the touch.