I think im just gonna give it a shot and see if i can get a new cable to go through this way. Tie and tape a 18 14 poly rope to the hdmi cable.
How Do I Run Cable Through My Ceiling Home Improvement
Fish hdmi cable through wall. The simplest way is to unhook one of your existing cables and tape a string to the end. Then tape the hdmi cable along with the existing cable to the string and pull them both back in through the two horizontal studs. Make sure the tape is smooth so the cable can slide through the opening. From my understanding the guy who did this made a total of 3 holes in the wall and the cables were then fished through. If there is blocking i would tape a fish tape onto the old wire and pull it up through the blocking so you will then have the fish tape in place to pull the new wire back through. For future cables leave a length of poly rope in the pipe.
For future reference electrical pvc or flexible pvc with wide smooth 90 degree turns should be used not plumbing fittings. Carefully extend the fish tape from one opening to the other. Extend the fish stick so that it protrudes out of both the top and bottom holes and you can tape it to the wall temporarily. Carefully push the top low voltage box into the wall cavity just enough that you can easily access the tube from the bottom hole. Then retract the fish tape to pull the cable through. Dont really have anything to lose at this point.
The wall was not open when the cables were run. Feed the wire fishsnake wire through the top hole down through the wall and fish it out through the bottom hole. Push the fish stick up through the tube and out of the top low voltage box. Once the new cable is is run through the wall and both openings you would then push the ends of the new hdmi cable through the back of the box openings and pull enough out to reach the tv and the other device and reinstall the boxs. Amazons choice for fish cables through wall upgrade fish tape wire puller through wall wire threader fish plus fish cable fastener with steel rope 40ft12m 41 out of 5 stars 210. Pull the cable through with a fish tape.
When you pull it out you pull the string in. Pushpull the hdmi cable out. Tape the audio cable to the rope pushpull both back in. Easy way how to find studs fish wires through fireblock in wall duration. This may be easier said than done and its good to have a helper. Tape the end of the fish tape tightly onto the cable with electrical tape.
In my experience the wire fish tool is necessary we tried a wire clothes hanger and it wouldnt work.

















