didifart

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  • in reply to: BEOCORD 3500 #3707
    didifart
    BRONZE Member
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      So, here’s the video : https://youtu.be/lVNNq7JGhV0

       

      in reply to: BEOCORD 3500 #3623
      didifart
      BRONZE Member
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        Hi all.

        So , I will answer myself as it can be usefull for anyone having the same issue.

        I found that the 8vREF signal was around 17mV and not 8V. This 8VREF is used on 2 opamp, on the lm3915 of the vu meter and …as a voltage reference on the LM1131 dolby chip. From the schematic, i suspected a faulty capacitor (C417 on dolby PCB) and… I was right. It was short cut so i swapped it with a brand new one and everything works fine now!

         

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