I was away from home/family for several month during which my router failed and remotely connected to turn back on the crappy modem/router wifi back on so there was at least something. After being back for the last few days I managed to make Merlins latest firmware to work (stock latest or older didnt work) and worked perfectly for the last 3 days until this. All data lights are on, USB 2.0 is sometimes on and sometimes off. I tried all combinations of resetting with power+reset' WPS+power...
AC68P Ethernet and one USB light on, power light off
AC68P Ethernet and one USB light on, power light off