yamaha line-out modifcation
I tried last night to add the TL082 modification to my iopener to get line out audio from the Yamaha sound chip but I failed miserably. I was using a cheap soldering iron and didn't have a steady hand. In the process of trying to attach wires to the end of resistors I broke off the two surface mount resistors (and their pads) I was trying to attach the wires to.
After this I investigated the board a little further and found two pads on the underside of the board that I should have used instead. When I attached my amplifier circuit to them they didn't provide any audible output and without an ocilliscope I don't have many other tests I can perform. I'm guessing that the resistors that I broke off were pull up or pull down reistors and if I could replace them then I could regain audio.
Does anyone know the values of these resistors? I've taken ButtonPunchers picture and circled the two resistors that I broke. If I could find their values I could replace them with non-surface mount resistors in my amplifier circuit and just attach to the proper places. Also, since I broke the pads off I can't trace the connections well. If anyone knows where these resistors connect to it would save me many many headaches. Ultimately there would be a pad on the bottom somewhere that attaches to both sides of the resistor.
The picture is at http://pictures.deadtrout.com/projects/who_knows.jpg. I've circed one resistor in red and one in green. If you could help me out in any way I'd very much appreciate it.