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Philips CDM4-mechanism

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    #1

    Philips CDM4-mechanism

    Two totally different cd-players, but the mechanism was almost plug and play, only needed to change the connector for the spin motor. Technics SL-PJ28A -> Marantz CD-40.
    Note: SL-PJ28A is more different with identical looking SL-PJ28 than the Marantz...
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    #2
    Re: Philips CDM4-mechanism

    Is there any adjustment, sometimes it skips a bit when "cold" while playing CD-R's. No skips when it has been on for a couple of minutes.

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      #3
      Re: Philips CDM4-mechanism

      that will be a capacitor,
      they have better performance when warm

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        #4
        Re: Philips CDM4-mechanism

        Originally posted by stj View Post
        that will be a capacitor,
        they have better performance when warm
        Where's that cap? I got the player as it would not play to the end, and made some clonking sounds. I can still hear those occasionally.

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          #5
          Re: Philips CDM4-mechanism

          https://www.diyaudio.com/community/t...sports.372412/

          Page one, post three

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            #6
            Re: Philips CDM4-mechanism

            Changed the cap to 22u (which the old one was), but first it went only worse. The original cap had 6% Vloss. Then I changed to 47u which was in the service manual, it seem to work better.

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              #7
              Re: Philips CDM4-mechanism

              It was the clamp. I managed to move the fault to another identical Technics, only by moving the clamp. It had a dip in the middle of the small plastic thing which should be smooth.

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