So, we've had Rock Band 3 for the Wii for about a month, and it's been working fine. We've got two guitars (one rock band 2 vintage, one newer), plus the pro drumset.
Everything was working fine, but suddenly, we can't get all three of these instruments to connect at the same time. It seems like any two work, but if we connect a third, the blue light goes on but none of the four controller LEDs lights. We've resynced, unplugged, replugged and so on.
I don't think we changed anything, but maybe we did and I don't know what it was.