Ok... finally got around to the sx 850... Heres how I checked bias ...power on..no load...pulled jumpers and took readings. I took readings before I pulled the jumpers and the readings seemed to jump around,so I pulled the jumpers. As per the procedure,VR1 and VR2 were checked and set to 0v....VR3 and VR4 were set to 20 mv. After setting,I let the receiver warm up for 20 minutes and rechecked. A couple needed slight adjustment but it looks like the bias is set pretty well. I hope I did it right! So, still no relay click. As a note,the receiver has sat for a few days and when I plugged it in and turned it on today,the relay did click on,then off after 10-15 seconds, which is an improvement. Next step? I have a feeling that I,ll be rebuilding both boards,but would like to take it a step at a time just to see what the main problem was. Any thoughts are appreciated! Chuck
ps... it seems that the Q7 on the protection board has been an issue.. I may replace that tomorrow just to have that taken care of.