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Insignia ns-20LCD tv earphones have sound but tv speakers do not

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  • sheliadthomp May 10, 2010

    Ok this is the first time the earphones have been used I was attempting to do some troubleshooting and said lets see if headphones work--and boom they work--what do i need to do to test the speakers

  • sheliadthomp May 11, 2010

    yes it was helpful



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The most likely cause of this is the socket the headphones plug into is damaged.

When you insert the jack into the socket it engages a leaf part of the switch which takes the built in speakers out of the loop.

What happens if you are not real careful plugging or unplugging the headphones the socket they connect with can get damaged.

Two ways to know which it is.

I use a plastic wand like those on spray cans of oil etc and insert it in the socket and move it around; it the sound returns to the speakers even for a moment----the socket is damaged.

The second way would be to open the set and connect the speakers with the socket disconnected.

The fact that you have sound from headphones means the audio circuit in the set is ok.

The audio for both speakers is routed to the socket first and then from there it connects to the speakers.

Please let me know if you need more help. I am in California and usually here from noon to about 8 pm each day.


Posted on May 10, 2010

  • SD Tech
    SD Tech May 10, 2010

    First, it will almost have to be the socket the jack plugs into.

    To confirm this someone would have to open the set to examine it first as sometimes the socket is on a tiny circuit board and may have broken connections.

    The other way with the set apart is connect the speakers to the wires going to the jack. In either case some has to open the set and have a close look.

    If you are lucky the jack if it is on a circuit board and will have only 3 or 4 solder connections---look there first to see if any are broken--pushing the headphone jack in hard can cause this to happen.




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