I doubt it is the router but I could try some tests. It is an Apple extreme. I do have Windows, Macs, iOS devices, and Android devices at home for testing purposes.
I realize that a properly working SB6121 would be fine. I'm just wonder if something could have been damaged (say from a power surge or heat from leaving it in for 3 years) that would cause it to not work sporadically.
Most of the time my (Comcast Blast) connection works and is fast. However, recently it seems like I've been losing my connection more often (sometimes weekly). I thought it was maybe my modem since Comcast online always says that my connection is fine and there are no outages in the area. The reason I think it's maybe not the modem is that it usually happens on Sunday night. The modem I use is the SB6121 which I bought over 3 years ago. Do you think it would be worth getting another modem or do you think it's my neighbors watching lots of streaming HD porn after night church.