After snaking this cable around furniture and shelves I found out why I got it so cheap (Goodwill Outlet, of course). OK, it can be repaired, but I need something NOW. Thankfully I had another one I can use for now, so things are up and running.
Now to find out why I’m losing signal on HDMI cables after going through a switchbox and splitter. Is it the number of connections or the total length? Either way, I’ll be ordering some short (1 or 1.5 ft) cables to make the install a little cleaner.