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    Integrated Amplifier "Ticking"

    Hi all, I'm new here and I have to admit that my first post is all about getting good information from a reputable source.

    I recently purchased a Cambridge Audio Topaz amplifier and returned it to the dealer because of an unusual persistent ticking sound coming from within the unit. It "appeared/sounded" to be emanating from a large capacitor behind the power switch which can be seen through the top of the vents. In all my years of purchasing electronics I never heard a unit to tick as loud as a watch while on standby and I was ( justifiably, I think) concerned that this is not normal or safe.

    On returning the item I requested a replacement and was stunned to hear the exact same sound coming from the exact same area from within the unit. Is it at all possible that I am over-reacting here or indeed is it at all possible that I could receive two different units with the exact same fault if it is indeed a fault?

    This link takes you to a jpg taken from another forum of the amp involved.

    http://i1221.photobucket.com/albums/...9/TopazAM1.jpg

    The ticking appears to be coming from the area around the PSU filter caps.

    The reason I am looking for advice on this is my claims appear to be falling on deaf ears as far as the manufacturer is concerned as they appear to be stalling on responding to my concerns.

    You can also "hear" the ticking on this youtube video if you turn the volume up fairly loud.

    http://www.youtube.com/watch?v=UEmRW...HumGMNgwT239zw

    Many thanks for reading.

    #2
    Re: Integrated Amplifier "Ticking"

    THat is very interesting, it is just simple bi-polar (+/-) power supply. Can you use something like wooden stick or some kind of listening device to see if it is comming from both caps. The frequency on the two caps will be at 100 Hz for the fundamental frequency.
    Never stop learning
    Basic LCD TV and Monitor troubleshooting guides.
    http://www.badcaps.net/forum/showthr...956#post305956

    Voltage Regulator (LDO) testing:
    http://www.badcaps.net/forum/showthr...999#post300999

    Inverter testing using old CFL:
    http://www.badcaps.net/forum/showthr...er+testing+cfl

    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
    http://s807.photobucket.com/user/budm/library/

    TV Factory reset codes listing:
    http://www.badcaps.net/forum/showthread.php?t=24809

    Comment


      #3
      Re: Integrated Amplifier "Ticking"

      I have used a cardboard tube to identify it is indeed coming from the caps. I cannot tell if it is one or both though. I'll use a wooden stick later to see if I can identify if it's one or both.

      Complete Newbie..............Why would these caps tick like that???

      Comment


        #4
        Re: Integrated Amplifier "Ticking"

        No Idea, that is very strange. Does it change during times of day?
        Never stop learning
        Basic LCD TV and Monitor troubleshooting guides.
        http://www.badcaps.net/forum/showthr...956#post305956

        Voltage Regulator (LDO) testing:
        http://www.badcaps.net/forum/showthr...999#post300999

        Inverter testing using old CFL:
        http://www.badcaps.net/forum/showthr...er+testing+cfl

        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
        http://s807.photobucket.com/user/budm/library/

        TV Factory reset codes listing:
        http://www.badcaps.net/forum/showthread.php?t=24809

        Comment


          #5
          Re: Integrated Amplifier "Ticking"

          Originally posted by budm View Post
          No Idea, that is very strange. Does it change during times of day?
          No, I've even moved it to a different location to see if it could possibly be my mains supply, no change. I plugged it into a surge protector, disconnected everything except mains supply, no change. In all my years in this house I have never had an electrical/electronic device ( and I have lots) inexplicably fail or give reason for concern, I am convinced my mains supply is "clean". I have a BD player, TV, and surround sound system plugged into to the same rail for years with no problems whatsoever.


          I'm baffled because my dealer says I am the only one with this problem he has heard of, but then he would say that, wouldn't he??????

          Comment

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