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The Acer Chromebook CB3-431-C5EX is a fourteenth generation Chromebook released in May 2016. The 14-inch Acer Chromebook 14 is made to have a full HD screen and up to twelve hours of battery life.

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Why does my chromebook detect headphones without any headphones!?

my acer chromebook 14 has a problem where the chromebook detects headphones, without them being plugged in. aNy AnSwErS!?

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Hi @ssssssssssssss ,

Inside the audio socket there is a contact that operates when a plug is inserted that lets the OS know so that it switches the audio away from the laptop’s speakers and onto the socket (earphones). When the plug is removed the contact releases and the audio is switched back to the speakers.

This contact has become stuck in the operated position.

Unfortunately when this occurs the socket has to be replaced as it is irreparable.

You could try plugging and unplugging an earphone cable plug a few times and when plugging it in and out, gently stress very gently wiggle it from side to side as you are doing so to see if this may have released the contact when you unplug it.

If this doesn’t work you’ll have to replace the socket.

I have been unable to locate the socket as an individual part so that you can replace it. Doing it this way would require that you have SMD (surface mounted device) soldering skills and tools to effect the repair.

You can always just replace the entire audio board on which the socket is mounted.

Here’s a link to the ifixit Acer Chromebook CB3-431-C5EX Power Port Replacement guide, which may be of some help. I realise that this is not your problem but the the guide is useful as it shows how to open the laptop so that access to the audio board is possible. In the image at Step.8 of the guide the audio board is visible, next to the power port being shown removed.

Here’s a link to a supplier of the part. It is shown only to give an idea of the cost of the part. (Unfortunately, they have none in stock but can be ordered in). You may have better luck sourcing a supplier Just search for Acer CB3 431 audio board to get results. (You could verify that this is the correct part by checking the board number shown in the supplier’s image against what is printed on the board in your laptop).

Hopefully this is of some help.

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