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Duff motorised volume control

Discussion in 'd.i.y.' started by matt j, Oct 10, 2019 at 11:11 AM.

  1. matt j

    matt j pfm Member

    Just had a quick look at this as the remote volume isn't working, it's sending a signal and I get 4.5-4.8v at the motor input so I assume the motor is kaput?

    Any way to identify it and should it be fairly straight forward to swap? I have the service manual but I can only see what I think is a JVC internal part number so pretty useless, it looks very similar to the ebay link below.

    Pics (click to zoom)

    [​IMG]

    [​IMG]


    Ebay link

    https://www.ebay.co.uk/itm/Alps-RK2...1ec05f71f3:g:wkwAAOSwKV9b7adc&redirect=mobile
     
    Last edited: Oct 10, 2019 at 2:31 PM
  2. peterm

    peterm pfm Member

    I used one of these from Rapid some years ago to replace a dud motorised volume pot on a NAC82, simple job and worked fine ever since.

    Prior to that I had a similar problem with it and found the cure (for a while at least) was to re-solder the connections from control board to motor brush holders, vibration from the motor (presumably) had caused "solder fatigue" on some of the joints giving the effect of a dry joint. Some of the soldered joints in your photos don't look too great.
     
    matt j likes this.
  3. peterm

    peterm pfm Member

    Just found my 2013 post on this by Googling "Volume pot on NAC82 no longer responds to remote", part of a shortish thread:-

     

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