If you are having problems with your CTC100 you can call us at
If you wish to try and fix the problem yourself, the user manual may be useful, and the following troubleshooting guide may be helpful too.
1) Upgrade firmware in the field
Click here to download the firmware upgrade procedure.
If you are still having trouble your CTC100, your instrument will need to come back to SRS for service. Click here to get an RMA number.