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Line 6 Flextone help

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  • #16
    Mute function

    Yeah. I've seen Marshalls, with the 7293, that the mute circuit also went south when the 7293 went.
    I think they do a slow rise of 5 volts on the mute pin.
    Can you identify the transistors in any way?
    Any markings?
    TO-92?

    Comment


    • #17
      Thanks. It's surface mount. About the size of a large flea! Markings on Q4, which burned up, are not legible. I might be able to see some ID on Q3, but I don't know that it is the same as Q4. I am going to call someone I know, at an amp repair shop, and see if they can get a schematic. I got the 3rd-degree, from Line 6 tech support.

      Gary

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      • #18
        Q3 and Q4 are PMBT4401, NPN. Q3 is just an inverter for the signal to drive Q4, which drives the mute pin on the TDA 7293.

        Gary

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        • #19
          Hey Gary,

          Did it work for you after you replace Q3, Q4?

          Thx

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          • #20
            Do yo have the schematic?

            Thx
            Steve

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            • #21
              Line 6 Flextone help

              Does anyone have a pic or can take a pic of the transformer and connections to the main board ( not the smaller power board w/plug)

              I had a friend work resolder a new RJ45 connector on, he was good and labeled the wires but not the pins on the transformer.

              5 wires vs 6 pins

              These are the 5 wires I need to reconnect to the Transformer

              H10 Blue wire
              H11 White wire
              H7 Red wire
              H9 Red wire
              H8 Grey wire

              Thanks in advance!
              /jw

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