Home Forums Product Discussion & Questions BeoGram beogram 4002 smoking diodes

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  • #52649
    beostuff
    BRONZE Member

      I recently acquired a dead 4002 turntable. I changed a bunch of transistors that tested badly and turned it on. It all worked for about a minute then the rectifier diodes (D1-D4) started smoking. Any ideas?

      Thanks

      #52650
      Dillen
      GOLD Member

        Something shorted?
        Which transistors did you replace?
        How did they measure wrong?
        And what did you fit instead?

        Martin

        #52651
        Glitch
        BRONZE Member

          Any ideas?

          In addition to what Martin said…

          Are you doing your powering-on using a “dim bulb tester” (or equivalent)? If not, you might want to. This would reduce the possibility of doing more damage while you sort things out.

          Glitch

          #52652
          beostuff
          BRONZE Member

            thanks for the response. Appreciate it. I am using a dim bulb tester now….I replaced TR13 and 14 as they tested bad. But now IC1 is suspect – tests as a diode on a working 4002. Fails any test on this board.

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