TJMotter, I have picked up a 646, with no input on the HDMI inputs. Everything else works(tuner, net, wi-fi, bluetooth). Youtube, from the smart TV works well, audio and video, but nothing works via HDMI IN. HDMI Out works.
What could be the problem? HDMI MN and SII ICs?
I'm also trying to repair a RZ800. Found a shorted microcontroller(Q7009). Do you think, that this part can be replaced from another receiver? That is what I have done, got one from a 717, but it seems that al it happens, is the power supply relay clicks on and then off. Nothing else happens. If I unplug P7000B ribbon, it stays on, but I start smelling some kind of smoking smell. There is no display at all.
One of the HDMI ICs(Q8000 - MN864788) was shorted as well, it is removed and waiting for the replacement.
I suspect a surge through the HDMI.
Living Room: Samsung UN65JS8500,Onkyo TX-NR676,Klipsch R-28F,Klipsch RC-62II,Klipsch R-14S,Polk Audio 80 FX/RT(Atmos)
Bedroom: Samsung UN55MU6290,Onkyo TX-RZ610,Onkyo & Fluance speakers
Garage: Epson 5040UB,Elite Screens 125" motorized screen,2xKlipsch RP-160M,4xKlipsch RP-150M,Klipsch RP-450C ,2xKlipsch CDT-3800II-Atmos,Klipsch R115SW,Klipsch R110SW