Hello again, It sounds like something else very basic is wrong. I would suggest testing the amp all by itself first and get that working without question. To do this all you have to do is input 0.2v right to the terminals (after disconnecting the sense resistor of course). This will tell you if something is wrong beyond the sense part of the circuit. If it works ok, then it must be in the sense part. In other words, we break the circuit into smaller parts and test each part separately and carefully.