Yeah, it's an old thread but maybe we should create a stickied thread that lists the problems that were caused by the cable/phone installers/companies, for future reference, like using copper-clad steel cable with tight bends/kinks, cheap F connectors, no moisture seals on exterior splices/splitters, stupid cable routing, leaving the demarc box open (like the one where I installed the UHF terminals), etc.

Time Warner has a diagnostic channel but it doesn't necessarily show signal strength, although it does show network connectivity, IP address, etc. It's channel 1900.