1
vote
5answers
119 views

TV Arcs with Cablebox through both Coax and HDMI

Here is our setup Outlet in older house that was replaced with a GFI last year. (no issues until recent) The GFI doesn't have a ground wire running up from the basement. Just the white and black ...
7
votes
1answer
5k views

How can I test network and coax jacks?

We bought new house and I need to test network (RJ45) and coax jacks to see which ones are working. How can I do that without actually connecting computers/cable boxes?