I have an LG 60PV450 tv connected to a Sony STR-DH510 and I can't get the Simplink on the LG to recognize the Sony. I've tried turning on all the settings and turning them off, ditto the tv and the receiver, and whenever I click the 'Simplink' button on my LG remote it shows 'No Simplink Device'. Any tips/tricks? Are these particular models incompatible? What's weird is that the Sony receiver will turn off with the TV, but no other functions seem to work.