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President
Avid Contributor I
Aug 27, 2021 6:19 PM UTC

Connect:Amp line in left channel not working

I have a very simple setup in our summer house. One Connect:Amp driving to speakers and an active sub. Line in is from TV.

Suddenly the left channel on the line in has stopped working. I have tried switching channels, different cables and different audio sources. The left channel simply does not register any input (i.e. external source dissapears from controller when only left channel is connected).

Anyone have any advise on how to troubleshoot further? - If the left channel has “died” will it show in a diagnostics report?

 

 

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    7 replies

    GuitarSuperstar
    Lead Maestro
    Aug 27, 2021 6:43 PM UTC

    What happens if you wire the left speaker to the right speaker terminal and right speaker to the left speaker terminal on the Connect:Amp? Also try unplugging the TV and Connect:Amp from power for a couple of minutes.

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    "Receive with simplicity everything that happens to you." - Rashi
    PresidentAuthor
    Avid Contributor I
    Aug 27, 2021 6:51 PM UTC

    @GuitarSuperstar - Done all that. Even with a new audio cable. Also tried all of this with another audio source (my phone).

    I suspect the left input channel is faulty?! 

    If so, will this show in a diagnostics report?

     

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    GuitarSuperstar
    Lead Maestro
    Aug 27, 2021 6:53 PM UTC

    Yes, I would imagine it would show the faulty left channel. Go ahead the submit the diagnostics and post the confirmation number on this thread.

    https://support.sonos.com/s/article/141?language=en_US

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    "Receive with simplicity everything that happens to you." - Rashi
    PresidentAuthor
    Avid Contributor I
    Aug 27, 2021 7:36 PM UTC

    Diagnostics sent. Confirmation number 1301773213.

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    buzz
    buzz
    Grand Maestro
    Aug 27, 2021 8:35 PM UTC

    Head smacking detail: Make sure that the L/R balance control is set in a reasonable range.

    Also note that the Line-In detects if there is an RCA plug inserted. Some times, if the pin is short, this detection fails. As I recall, both Line-In’s need a plug before the controller will allow access to Line-In.

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    PresidentAuthor
    Avid Contributor I
    Aug 28, 2021 5:09 PM UTC

    @buzz Line in is detected and available with cable connected to RCA right channel only. Also vith both channels connected but only sound in right speaker. Linie In not detected with only RCA left channel connected.

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    buzz
    buzz
    Grand Maestro
    Aug 28, 2021 7:03 PM UTC

    Are you able to play both channels from an online music source at your location? You have some sort of Internet connection if you are able to submit Diagnostics.

    Unfortunately, the symptoms are converging on a left channel Line-In fail.

    At this point I would be tempted to smack the unit very hard with an open hand. This is mostly a  potential diagnostic trick. If there is a broken internal connection this sort of physical shock might result in a very temporary, fragile “repair”. The repair may last seconds, hours, days, or whatever.

    In its present condition CONNECT:AMP has some value as a trade-in. If you are the DIY repair type, and my “smack” repair gets results, you may be able to find and repair the bad connection, but this connection could also be inside an integrated circuit and beyond your reach. SONOS does not support any sort of field repair.

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