littlejohn62 0 Posted October 20, 2014 I have an 8 channel HD SDI DVR and I have noticed the bnc connectors on the back of the DVR get very hot to the touch. With or without cameras connected. I have contacted tech support but as always, they never give me the answer to my question "Is this normal" They will give me an RMA but I don't want to pack everything up if this is normal. The fans work just fine. I used an infrared thermal probe and the connectors reach between 86 and 90 degrees F. The ambient room temperature is 78 F. Share this post Link to post Share on other sites