Up until today I have been using the leak trac 2200 with great success. Today I could not get any sound from the system and the red light on the main box will not light when you press the red button. I have replaced all the batteries to no avail. I have checked all the external wires for continuity as well. Any ideas.

send it back to lance for repair...it may need service. dont take it apart on your own.. ie you tube video leakalyzer