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  1. #1
    Junior Member
    Join Date
    Aug 2008
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    23

    How to replace rotary encoder of volume knob

    Hi,

    the volume knob of one of my radios no longer works as expected. Turning the know to increase the volume often lowers it and it's also started to just jump randomly which is no fun at night. Using the remote always works as expected.

    Therefore I would like to replace the rotary encoder as I guess that part is the culprit. Does anyone know whether a compatible rotary encoder is still available?

    Thanks
    Campus

  2. #2
    Senior Member
    Join Date
    Apr 2005
    Location
    Hampshire, UK
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    268
    You might have to strip it to find out what it is. I have also on an amp previously stripped it and cleaned inside with electrical cleaner. Last resort if you canĺt get a replacement.


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  3. #3
    Junior Member
    Join Date
    Aug 2008
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    23
    I already tried to clean it without opening the rotary encoder but it got worse a few days later, so I would rather replace it instead if trying to open it (never done it) but it's probably not easy to find an exact replacement.

  4. #4
    Junior Member
    Join Date
    May 2010
    Posts
    27

    Possible volume fix

    I also had a radio that developed the symptom’s described, the volume pot (rotary encoder) didn't always respond. If you put pressure on the control it seemed to kinda work correctly.
    Sounded like a poor connection on the circuit board. I disassembled the radio, removed display cover and circuit board then re-soldered the volume control connections on the circuit board. The connection feeds thru the board so it required top and bottom re-soldering. Put radio back together and now volume control works correctly again. Hope that helps.
    Last edited by kloach; 2018-03-23 at 07:33.

  5. #5
    Junior Member
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    Aug 2008
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    I did some research and finally found an encoder which fits perfectly: https://www.mouser.de/ProductDetail/...252B2%2FgAFA==

    After exchanging my faulty one with this Bourns encoder everything works again. The only negative thing is the push feature, which requires a bit more power when pushing down.

  6. #6
    Junior Member
    Join Date
    Dec 2007
    Posts
    24

    Thank you!

    Quote Originally Posted by Campus View Post
    I did some research and finally found an encoder which fits perfectly: https://www.mouser.de/ProductDetail/...252B2%2FgAFA==

    After exchanging my faulty one with this Bourns encoder everything works again. The only negative thing is the push feature, which requires a bit more power when pushing down.
    Two years later . . .

    The volume encoder on my SB Radio has started to slip. A quick search brought up your solution - thank you!

  7. #7
    Quote Originally Posted by Martyn View Post
    Two years later . . .

    The volume encoder on my SB Radio has started to slip. A quick search brought up your solution - thank you!
    It's most unfortunate that the shipping on a EUR 0.95 component to the UK is EUR 20!

    There's separate thread here on the same issue. You might want to try some contact cleaner first - that did the trick for me really easily & successfully.
    Server: LMS 8.1.1 on piCorePlayer 7.0.0 on Pi 4B 2GB with library on 512GB USB drive
    Listening on: 2 x Squeezebox Radios 8.0.1 , and direct from the Pi using a Behringer UCA202 USB audio interface

  8. #8
    Senior Member Heuer's Avatar
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    Nov 2005
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    Nottinghamshire
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    761
    CPC in the UK have something very similar: https://cpc.farnell.com/alps/ec12e24...taty%20encoder
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  9. #9
    Senior Member chill's Avatar
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    Quote Originally Posted by Heuer View Post
    CPC in the UK have something very similar: https://cpc.farnell.com/alps/ec12e24...taty%20encoder
    Farnell have the Bourns item in the Mouser link (https://uk.farnell.com/bourns/pec12r...rpm/dp/2663531), as do RS (https://uk.rs-online.com/web/p/mecha...oders/1675311/)

    EDIT: My mistake - discontinued at RS.

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