I recently acquired an AU-9500. So I look in the service manual to adjust the offset and bias. I set the offset ok everything responds as it should. I then follow the instructions and remove the speaker fuse and hook my multimeter in series where the fuse was as it says to do. I fire it up and it says to adjust to 30-40ma. Well its at 10-11ma and turning the pot to adjust it does nothing. It does not change the current whatsoever. Both channels respond exactly the same way. What the F? I cleaned the trimmer and checked it with a meter and it does indeed change resistance when you turn it. So why doesn't the bias change? I have attached the instructions and a pic of my meter clipped in. What else could be wrong that would stop the bias from changing? It even says I do not need any load connected but I tried it with a load and didn't matter.
