i just assumed a memphis 16mc2000b amplifier and im interested in fixing it. however ii doesnt work properly. When i hook it up it lites up propperly/ no protection light is what i mean. just the green but no sound except when i turn the gain switch up and down. then it just popps through the speakers loudly. What are the possible problems and how hard do you think it would be to fix it. Do you know of any places i could send it.