Hi, I recently inherited an Onkyo TX-866 from my dad who purchased a new H/K receiver because the tuner does not pick up any stations anymore on the onkyo. I am using this unit right now to power my speakers in my workshop which it does a great job, but it would be nice to be able to use the tuner. Any ideas why this function might not work. I am some what technical and I am familar with how to solder. Is there any particular place/area that I should check inside this unit. Thanks for your help!