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51 posts

Master Geek


# 249399 9-May-2019 11:31
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Hi, I have had a LG 55 inch TV working for some time on a system where i use ARC to send the sound to my AMP. The HDMI cable run is about 5 meters. This worked well with the Audio dropping out only when changing the volume then would resume after volume change.

 

I Have now purchased a new Toshiba 65" Android TV and when using the ARC every 2 -3 mins the Audio will drop out for about 1-2 secs on the same setup, my amp shows the HDMI indicator / Audio type indicator dropping then coming back on the display.(if needed i can supply a video to explain this)

 

This drop will occur no matter the audio type used eg PCM, AC3, DTS it also does not matter what im playing from eg TV application or PS4 connected to HDMI on TV using the ARC for Audio. There is no issues when connecting external devices (PS4) directly to the AMP.

 

  • Would this be an issue with the detection of the ARC on my AMP?
  • Could it be the HDMI run is to long? (The cable is HDMI 2.0)
  • Is there something that can be used to boost the HDMI so that the ARC is better?

Any information or troubleshooting tips will be appreciated.


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3550 posts

Uber Geek
+1 received by user: 560


  # 2233770 9-May-2019 15:10
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It could well be the cable that's at fault...

 

 

 

However, my money would be on a decidedly disastrous implementation of ARC by Toshiba.

 

Sadly, with TC's from Toshiba, Veon etc it's the little things that they often overlook / ignore.


378 posts

Ultimate Geek
+1 received by user: 15


  # 2233791 9-May-2019 15:52
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i had similar issue. turns out my it was my HDMI cable (even it was a high speed cable)

 

upgraded to a "High-speed with Ethernet" cable and it fixed the problem


 
 
 
 


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Master Geek
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  # 2233845 9-May-2019 16:41
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mrphil:

 

i had similar issue. turns out my it was my HDMI cable (even it was a high speed cable)

 

upgraded to a "High-speed with Ethernet" cable and it fixed the problem

 

 

 

 

your old cable was actually 'with ethernet' as ARC uses the pins for ethernet - so if it worked with the old cable those pins were connected

 

 

 

so problem was just a bad cable


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  # 2233847 9-May-2019 16:45
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Have you searched the model numbers of your TV and amp to make sure they're both compatible with the HDMI v2.0 specification?

 

It could be that you need a v1.4 cable or simply that it's a cable of dubious quality as alluded to above. Length isn't an issue here, I've used a 10m cable with no issues whatsoever on a couple of different TV's.


82 posts

Master Geek
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  # 2233848 9-May-2019 16:49
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Dratsab:

 

Have you searched the model numbers of your TV and amp to make sure they're both compatible with the HDMI v2.0 specification?

 

 

 

 

ARC is a HDMI 1.4 level feature (not 2.0) : https://www.hdmi.org/manufacturer/hdmi_1_4/arc.aspx

 

 

 

 


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Ultimate Geek
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  # 2233858 9-May-2019 17:01
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bignose:

 

mrphil:

 

i had similar issue. turns out my it was my HDMI cable (even it was a high speed cable)

 

upgraded to a "High-speed with Ethernet" cable and it fixed the problem

 

 

 

 

your old cable was actually 'with ethernet' as ARC uses the pins for ethernet - so if it worked with the old cable those pins were connected

 

 

 

so problem was just a bad cable

 

 

 

 

its odd cause everything was working fine with my old setup 65" samsung ARC to marantz receiver then when i upgrade to 85" Sony ARC to marantz receiver my issues started but was fixed when i replaced the cable


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  # 2233889 9-May-2019 17:43
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bignose:

 

Dratsab: Have you searched the model numbers of your TV and amp to make sure they're both compatible with the HDMI v2.0 specification? 

 

ARC is a HDMI 1.4 level feature (not 2.0) : https://www.hdmi.org/manufacturer/hdmi_1_4/arc.aspx 

 

Yes, my thinking was more along the lines of the OP's [mismatched?] hardware possibly not playing nicely with the v2.0 cable that's being used.


 
 
 
 


195 posts

Master Geek
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  # 2233896 9-May-2019 18:13
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Maybe use optical from TV to AMP if supported these cables are cheap.




51 posts

Master Geek


  # 2234170 9-May-2019 23:23
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Guess ill try a new cable first, will see how that goes hopefully its that simple.


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