Connect with us

Garage door remote water damaged

Discussion in 'Troubleshooting and Repair' started by Mitchka, Mar 16, 2020.

Scroll to continue with content
  1. Mitchka

    Mitchka

    3
    0
    Mar 16, 2020
    I have a garage door remote that went through a wash cycle.
    Not it works for a short time after it has been discharge and battery re-inserted.
    Any ideas on possibly fixing this by some cleaning process using isopropyl alcohol?
     
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    9,668
    2,019
    Nov 17, 2011
    You can try to clean it with demineralized water, then rinse with alcohol and let it dry completely. Visually inspect for any residue (it often shows as a white powdery film. If you find some, try to remove it using more demineralited water and e.g. a soft toothbrush.
    Then give it a try.
    You may upload a crsip foto of your remote's PCB (front and back), maybe someone here can point you into the right direction where to look for possible problems.
     
  3. bertus

    bertus

    346
    112
    Nov 8, 2019
    Hello,

    What are the keys made of?
    When they are of the rubbery kind, the graphite layer om the inside of the key may be damaged.

    Bertus
     
  4. Mitchka

    Mitchka

    3
    0
    Mar 16, 2020
    Thanks Harald
    Will give that a try first as they is some powdery film.

    Hi Bertus the switches seem to work fine after i insert the cr2032 battery into the
    remote. After taking some close up photos there is some corrosion.
     

    Attached Files:

  5. Mitchka

    Mitchka

    3
    0
    Mar 16, 2020
    But it stops working after a few minutes
     
  6. Harald Kapp

    Harald Kapp Moderator Moderator

    9,668
    2,019
    Nov 17, 2011
    Sounds like the batteries are drained by a short circuit or similar. Does the remote send commands without a button being pressed? That would indicate that the rf transmitter is active when it should be off. one reason for that could be a short circuit in one or more of the buttons as well as a conductive path on the pcb where none should be. If the problem persists after cleaning the pcb, inspect the buttons. If you have a multimeter, you can set it to Ω and measure between the pins of the buttons. There should be a very high resistance (in fact the meter should indicate overload or out of range) when the button is not pressed. There should be a very low resistance (< 100 Ω) when the button is pressed. A low resistance without the button being pressed indicates a problem.
    Be aware, however, that you are measuring the button within the circuit. This may lead to erroneous results as the other components in the circuit influence the measurement. Ideally you'd de-solder the buttons for measuring, but it can be tricky to do that and reattach them without doing damage to either pcb or button.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-