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How To Turn Off Or Disable Bluetooth?

Discussion in 'Radio and Wireless' started by AndrewGeep, Apr 1, 2021.

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  1. AndrewGeep

    AndrewGeep

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    Apr 1, 2021
    Appliance's Bluetooth is always on and don't know how to turn it off. Appliance can be connected through app on Android phone, but there are just settings for adjustments but not to turn off Bluetooth.

    Anyone know of a way to connect with the appliance through some kind of app on Android phone or program on computer that can turn off Bluetooth?

    If I can't find app or program that can turn off Bluetooth on this appliance, than can at least one of those ways disable Bluetooth?
    1. Desolder or cut out the Bluetooth antenna?
    2. Desolder or cut out the Bluetooth chip (full cut out of the chip of just 1 of the pins)?

    Below are photos of board with embedded Bluetooth chip and antenna:

    1.jpg

    2.jpg
     
  2. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    Washing machine, Tumbler, Dryer, Oven, Fridge, ...?
    Please provide more information. At the very least make and model.
    Also: why do you wan t to turn of Bluetooth (just being interested)?
     
  3. AndrewGeep

    AndrewGeep

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    Apr 1, 2021
    It's a portable fridge (Alpicool T50) and the reason is I am not planning on using Bluetooth.
     
  4. Martaine2005

    Martaine2005

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    May 12, 2015
    What is written on U2 ic near the PCB antenna?.

    Martin
     
  5. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    Remove C17
    upload_2021-4-4_12-30-17.png
    This will disconnetc the antenna from the bluetooth circuit. This is permanent, you cannot turn bluetooth on and off by this method.

    May I ask why you want to disable bluetooth? It will not save a considerable amount of energy.
     
  6. Martaine2005

    Martaine2005

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    May 12, 2015
    cutting the antenna out of circuit will likely just reduce range considerably but cutting the VCC to the chip will disable it.

    Martin
     
    davenn likes this.
  7. hevans1944

    hevans1944 Hop - AC8NS

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    Jun 21, 2012
    Seems to me you would want to disable Bluetooth capability IN the Appliance. That would prevent the Appliance from being "paired" with ANY Bluetooth remote control. Find the Bluetooth transceiver located inside the Appliance and disable it.
     
  8. davenn

    davenn Moderator

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    Sep 5, 2009
    that's the photo's he has provided :) :)
     
  9. davenn

    davenn Moderator

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    Sep 5, 2009

    Exactly
     
  10. AndrewGeep

    AndrewGeep

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    Apr 1, 2021
    You mean on the chip by the U2?
     
  11. AndrewGeep

    AndrewGeep

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    Apr 1, 2021
    After I remove C17, can the Bluetooth chip still send out a signal even thou the antenna is cut (like a small radius signal)?

    The reason I want to disable Bluetooth is because I am not planning on using it, but it will constantly send out non stop signals which could be not healthy especially with food around.
     
  12. AndrewGeep

    AndrewGeep

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    Apr 1, 2021
    I like this idea better, because maybe the Bluetooth chip could still send out a signal but it will be a small radius?
     
  13. AndrewGeep

    AndrewGeep

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    Apr 1, 2021
    Is that the chip by the antenna with U2 by it?
     
  14. AndrewGeep

    AndrewGeep

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    Apr 1, 2021
    So I could probably just desolder or cut out the chip and without the main Bluetooth chip there will be no signal (even a small radius)?
     
  15. Martaine2005

    Martaine2005

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    I see what you are trying to do now. Yes U2, what is written on it? Any letters or numbers?.
    But this might not be a good idea to disable it.
    The food expiry date is important and needs Bluetooth to communicate with the smart recycle bin.

    Martin
     
  16. davenn

    davenn Moderator

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    Sep 5, 2009
    Disconnect the power rail to the chip as has already been suggested ... much less brutal
     
  17. AndrewGeep

    AndrewGeep

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    Apr 1, 2021
    If I remember right, there is nothing written on that chip (99.99% sure).

    The Bluetooth is for adjusting the temperature which can be adjusted on the outside control menu with buttons (without connecting thru Bluetooth) and also for some settings which I will probably leave as factory default anyways.
     
  18. AndrewGeep

    AndrewGeep

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    Apr 1, 2021
    If I do take out the whole chip, is it possible the board will stop working if it is somehow connected or programmed with the Bluetooth chip and if the chip is missing than the appliance won't work?
     
  19. AndrewGeep

    AndrewGeep

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    Apr 1, 2021
    I maybe could try to reprogram the chip and if successful will be much cleaner, but the thing is I don't know if a on/off function for Bluetooth is even programmed into the chip?

    If I take out the chip and the appliance will work than this seems like much simpler.
     
  20. Martaine2005

    Martaine2005

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    May 12, 2015
    Websites like the following
    Here, here and here are purely scare mongering.

    If you disable your bluetooth device, you still have next doors and others down the road and while shopping. You still have wifi from next door, down the road and in restaurants.
    You receive TV broadcasts and radio RF everywhere you go on earth (almost).
    You must own a mobile phone?
    You must have internet?.
    You probably have an electric garage door or gate.. And probably a keyless entry/start vehicle.
    The list is endless and you cannot hide from it.
    Just leave your appliance alone or buy one without technology built in. But remember, next door and down the road probably have several.
    I have a question for you, I was being facetious about the bluetooth and food expiry dates. So what do you think happens to food near Bluetooth?.

    Martin
     
    Harald Kapp and davenn like this.
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