Over the years, I've had many of the wifi routers used in my home fail. ? Is there any reason. Since there are no moving parts it seems odd they would fail so often. I've probably gone through four in about 8 years. I've had Linksys, DLink, and Netgear devices that stopped working.
Just this weekend, one stopped working. It is a linksys 54gs that I use as a wifi access point (turn off DHCP, don't plug anything into the WAN port). There has been no lightning recently, no power outages, no changes in the house. It has worked great for a year and a half, then this weekend wifi connections started to drop for hours at a time. Sometimes sporadically, the wifi connections would work. I have Wifi analyzer software on my phone and it showed a strong signal and did not show any other networks near the same channel. When I stood right next to the device, I could not get my phone to connect (or my Wii or my laptop). However a couple of hours later, they seemed to connect fine. Perhaps there is some interference I can't find, but nothing changed in my house and I didn't see any signals from my neighbors. I tried power cycles and resets, but no luck.