I have my TV connected thru a HDMI cable to my cable box. TV screen goes on-off for a few seconds. With the HDMI cable connected the sound goes off. Without the HDMI the sounds continue. I have tried to change the HDMI but the problem persists. Do you think this is something to do with an internal failure of the screen? This was purchased around 5 months ago.
I had the same problem and the only way i could solve it was to disconnect power from the tv, let it "reset" then it would be ok for a bit. the problem went away entirely when the cable company updated its software for its hd box. might be coincidence....
also, pre-update, the resolution wouldnt automatically set correctly. If I turned on the tv to a hi def station, it would set to 480 and only set to 1080 when i changed to a normal station then back to the hd. then it was fine. again, after the update from the cable company this went away.
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I would Google the model number carefully for "problems" "no sound" and usually this set will display some kind of error code===it may even have a hard reset to try===service manuals are available on the net/web to allow you to see how the sound circuit is set up etc.
1.This issue sounds as though the TV connection circuit has an issue. 2. You have changed the DVR and the HDMI cables and you still have an issue with the video (pink screen) indicates a video circuit issue ( improper voltage or current) at the video section of the circuit. 3. This will require some troubleshooting by a qualified tech. 4. To make sure, try connecting another properly working LCD TV to the cable box or DVR an check.If you get a picture and sound properly it is the TV. 5. Usually a cable box is QA'd (quality assured) by the company and will not be sent unless tested 1st
Your Bravia should have a 15 pin PC input, this input can take most standard PC resolutions, however if you a have a video card with an HDMI port, you should set your resolution to 1920 x 1080 @ 60Hz refresh rate so that the signal can be recognized and processed, many standard PC video resolutions are not compatible with the HDMI inputs. You should not require audio cables unless you are using a DVI to HDMI connection.
The problem is your cable box. I know you said you replaced it, but I work on TV's everyday and, sorry to say this but cable box HDMI outputs have serious issues, like no or intermittent sound and video. I have seen customers exchange their cable boxes 5 and 6 times and still have the problem. Your best bet is to use the component outputs of your cable box, visually you will not see a picture difference between component and HDMI when using a cable box. Your other solution is to get satellite; I have NEVER seen an HDMI issue with a satellite box
I don't know where you're located but you may want to double check with Time Warner on the availibilty of an HD box. I have TWC with an HD tier package and have an HDMI out on the box that runs directly into HDMI on this TV. Hope that helps!
make sure you have Tv on that particular HDMI input .I believe video 6 or 7 .if you do check menu make sure that input is not blocked. or you might want to try the component outputs of cable box and connect that to a component input on tv to see if that is working,,i have seen these tv HDMI input board bad..lets hoe this is not the case..