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Scientific Atlanta HD Cable Box / HDMI Audio Problem ...
https://forum.videohelp.com/threads/284059-Scientific-Atlanta-HD-Cable-Box-HDMI-Audio-Problem
If you are using the HDMI output, then the video and audio are output over the HDMI cable and the volume cannot be adjusted by the cable box (it should stay at line level). You would then need to adjust the volume on the TV itself. Regarding the issue with no variable audio with the use of the HDMI connection.
Scientific Atlanta 4250HDC HDMI with Digital Audio Out ...
https://www.avsforum.com/threads/scientific-atlanta-4250hdc-hdmi-with-digital-audio-out.1012254/
Over the weekend, I decided to grab an Onkyo HT-SR80 system. I connected the 4250HDC directly to my Onkyo receiver using a coaxial digital audio cable and suddenly, no more picture on my TV. The sound works great and is in DD5.1 (On the HD channels), but my TV just displays "Unsupported Video Format" and just seems to give up.
Cox Cable HDMI connection on Scientific Atlanta 8300HD …
https://groups.google.com/g/alt.cable-tv/c/_ifPokf9D_0
You can try this: hook up the box with the component cables (disconnect the hdmi cable at one end). Check that everything works with the component connection. Now reconnect the hdmi cable, leaving...
HDTV no sound with HDMI cable | Tom's Guide Forum
https://forums.tomsguide.com/threads/hdtv-no-sound-with-hdmi-cable.214211/
Check the menu on the cable box to select audio via HDMI. 0 K. kellywilliams0448 Distinguished. Feb 3, 2012 16 0 18,560 0. Mar 28, 2012 #3 TSMChicago : Hello, I'm running a Scientific Atlanta cable box to a Sony KDL 32L504 HDTV and I am not able to get any sound with the picture. Is there some default on the TV that needs to be reset?
HDMI and Cable Box problem - Home Theater Forum and Systems
https://www.hometheatershack.com/threads/hdmi-and-cable-box-problem.15100/
I currently have a Cox Communications(Scientific Atlanta)8240 DVR. I have the HDMI cable going from the cable box to the T.V. and have no video what so ever. The audio is run thru RCA cables into a tuner that does not have HDMI, that works fine. The cable box has been swapped out twice with no luck in fixing the problem.
Cable Box HDMI May Not Talk to Receivers | Page 5 ...
https://forums.audioholics.com/forums/threads/cable-box-hdmi-may-not-talk-to-receivers.21194/page-5
This Problem lays with the Cable box. It is not an HDCP issue. It has to do with HDMI 1.0 compliance. Neither Scientific Atlanta or Motorola boxes were originally designed to recognize a "REPEATER" (a repeater is a switching device in the HDMI format). Among other things it is able to pick off the audio bitstream from the HDMI signal.
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