the meter on my control unit is "dead". Doesn't register. I can still use my ears to hear the leak, but the meter adds to better and quicker results. Also, I have a second one where the meter works, but the connection for the phones is VERY sensitive. I have to hold it in place to ensure good connection. Who can work on these? thanks, chip

Did you ask the boys here at Anderson??? If they can't do it I would have to suggest that you send it back to Fisher.

I just hope that your wallet is big!!!