Beogram 4000 record detection issue

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  • 12 July 2022 at 07:45 #134186
    Anonymous

      Hi All,

      working on my BG4000 which does have record detection issues:

      first the detector arm bulb dies not come on ?
      It measures about 40 ohm and is getting 6.3V supply when ON is actuvated.

      checking the collector voltage at 1TR14 I should see a max of 2.2V  – the max I see is

      1.6V.
      Both, 1TR14 and 1C9 have been tested off board as good ??

      what am I missing here and why isn’t the bulb illuminated ??

      help would greatly be appreciated 🤗🤗

      ALF

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