my 360 didn't have the three lights, but it still didn't work. First I thought there was something with the AV cables because the power button was green like normal yet there was no audio or video response coming from the TV. I tried swapping cables and that didn't work so I figured it was the xbox. I tried this fix and it worked great! So if anyone is wondering if this can fix a broken xbox only if that xbox has a RROD, perhaps give this fix a try because it worked for me.