Very expensive power adaptor

Discussion in 'General Electronics Chat' started by neocronix, Mar 2, 2016.

  1. neocronix

    Thread Starter New Member

    Mar 2, 2016
    So i have a fully working bluetooth speaker, the Sony RDP-XF100IP, however the power adaptor broke.
    In a sony service center they ask 135 euros for a new one because they dont make them anymore and that is more than i am willing to pay.
    i have found some very cheap replacements, but i dont have a lot of confidence in them and the companies/ shops they come from have very bad ratings. Would it be possible to repair the power adaptor myself? I've repaired some powertools and built some pc's but never a power adaptor.
    The original power adaptor is the sony AC-S20RDP, AC to 20V, 2.5A DC.

    thanks in advance
  2. tcmtech

    Distinguished Member

    Nov 4, 2013
    I suspect that most any common laptop power pack that puts out anything around 18 - 22 volts and has an amp rating of 2.5 or more would power it just fine.
  3. neocronix

    Thread Starter New Member

    Mar 2, 2016
    So i just cut off the connector of the old adaptor and connect it to an old laptop charger?
  4. ian field

    AAC Fanatic!

    Oct 27, 2012
    Some stores sell universal laptop power bricks with setable voltage from about 15 - 22V. Usually they come with a selection of interchangeable power jack tips.
    neocronix likes this.
  5. wayneh


    Sep 9, 2010
    Yes. Check and recheck that you have the polarity right. If you want to do a nice job including heat shrink tubing over your splice, don't forget to slide the tubing on before you solder.
    atferrari likes this.
  6. AnalogKid

    AAC Fanatic!

    Aug 1, 2013
    And after you're done checking the polarity, check it again. And when it is all assembled and ready to plug in, check it again. If you are familiar with the adage "measure twice, cut once", this is one of those measure-17-times situations.