After reading this thread, I have developed a very strong urge to take my TIU apart tomorrow and tighten all the connections you all are talking about here.
Also, as another related FYI, not all banana plugs are created equal, some make very poor connections and can even fall out of the jacks. May not melt your TIU, but could cause similar problems with overheating. I have tried about 3 or 4 different kinds before finding some at Digi-Key that seem to be working well so far. I was about ready to switch to a heavy soldered fork connection like the higher end audio cables sometimes use (or used to use anyway?). I did not realize the problem with banana plugs/jacks until getting back in the hobby and getting a DCS system a few years ago. Used banana jacks/plugs in audio for years and never really noticed them being loose and not fitting well? Not sure if this is due to recent problems with quality or a problem that has been around all along? Either way, I have become somewhat skeptical of them now.
