Yes, proVanceTek does provides troubleshooting for existing theatrical audio and lighting systems. We service a number of manufacturer’s systems, including Leviton Colortran, ETC, JBL, EV, Shure, etc.
We just visited a venue that has an in-house Telex intercom system that was having issues. After some troubleshooting, we identified the issue that was causing the problems and was able to resolve the symptoms they were experiencing.
Additionally, while we were on-site, we performed some routine maintenance on their various intercom components; headsets, intercom boxes, cables, etc.