Start with the basics.

With power applied and the router running, is there still 110V at the router?
And is the 110V on the correct wires?
I ask this, because on 110V, the 'earth' wire is actually a common wire at 0V, then each of the other wires has 55V on them 180deg out of phase from each other to give you 110V. Is there any chance during you're rewiring you've connected the wrong wires up and the router is only getting 55V?