Question Physical transformer hum

Discussion in 'Hi-Fi Stereo Systems & Separates' started by gagashagy, Jan 5, 2019.

  1. gagashagy

    gagashagy
    Novice Member

    Joined:
    May 23, 2018
    Messages:
    6
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    1
    Location:
    Latvia
    Ratings:
    +0
    Hi,

    There must be a thread here somewhere but I did not find it because of overwhelming amount of similar threads (but not quite) - I see a lot of people talking about hum audible through speakers and I understand how that would be a problem, but my case is a bit different - I don't hear the hum while listening to music. I hear it when the system is turned off (sort of). I have a amp which has outlets at the back, so I plugged my cd player into one. Also, my amp has power and standby switches - when I turn on the power on my amp, cd player starts humming, while still being off. So there must be some loose winding - question is, have anyone repaired such problem on their own and how?
    Player is fairly old, so opening it up and doing some fixes is not a issue.

    cheers
     
  2. dannnielll

    dannnielll
    Well-known Member

    Joined:
    Sep 16, 2017
    Messages:
    1,808
    Products Owned:
    1
    Products Wanted:
    0
    Trophy Points:
    113
    Location:
    ireland
    Ratings:
    +760
    It is typically the case that those switched power connectors on the rear of the amplifier are simple two pin connectors. Try reversing the CD plug.
     
  3. Jamie

    Jamie
    Well-known Member

    Joined:
    Jun 27, 2007
    Messages:
    5,195
    Products Owned:
    2
    Products Wanted:
    0
    Trophy Points:
    136
    Location:
    Harrogate
    Ratings:
    +1,332
    I'd try @dannnielll suggestion first, if that doesn't work does it still do the same thing if the player is plugged into a normal socket?
     
  4. JohnnyNapalm

    JohnnyNapalm
    Active Member

    Joined:
    May 29, 2016
    Messages:
    179
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    31
    Location:
    Isle of Man
    Ratings:
    +59
    Have you checked the physical fastening of the transformer inside the CD Player? Does it hum when connected directly into the mains and not to the amp outlet?
     

Share This Page

Loading...
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice