Thanks, thats exactly what I needed.
I found probably the reason of my regulator issues. Small capacitor marked on the photo is physically broken (chipped). I should have 3.3V but its only 0.2V (You can see that regulator got burnt)
http://images.tinypic.pl/i/00365/ufb79tooixow.jpg
i'm pretty sure that the CAUSE of any issue with this router is ONE thing:
it has a standard barrel jack for the power input, but as soon as anybody plugs in a supply with more than the intended 5 volts, the regulators break.
I'll order KIS-3R33S and do it like You did. After using KIS there's no need to replace that broken capacitor (it will bypass the broken capacitor)?
How did You cut the regulator pins? I was thinking about unsoldering it.
the regulator module replaces the existing regulator circuit.
you should leave the original input and output buffer capacitors, but that's what happens when you use the connections on my picture and don't remove any parts.
it's best to disconnect the broken regulator's output, because it might interfere with the replacement regulator, but you might get away without.
(technically one should disconnect the input too, but i see no convenient way to do that, and it's not an issue unless the broken regulator draws much power (you would notice it shorting out the supply or getting warm))
i simple cut the trace with a knife, alternatively you might try to unsolder the choke (marked "3R4"), or simply break it off carefully, but i would recommend against trying to work on any of the existing parts, you're very likely to just cause more damage.
(the regulator chip is an smd part and plain impossible to unsolder without hot-air rework equipment or brute force)