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TJ 00109 or TJ DO109 Transistor, in Gem Jumbo Organ (like Vox Jaguar)

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  • TJ 00109 or TJ DO109 Transistor, in Gem Jumbo Organ (like Vox Jaguar)

    Has anyone heard of this transistor before, or know of any equivalents? The G# board on my Gem Jumbo is only playing high G# on the normal G#s and nothing for bass, I tested the components and the problem seems to be one of the Motorola transistors, TJ 00109, or possibly TJ D0109, i can't tell which. Unfortunately, google isn't helping me to work out which it might be, hopefully someone here might know?



    Thanks for any help,

    matalog.

  • #2
    A bit of googling says it's a Magnetic Tunnel Junction 00109
    It's not what you play. It's not how you play. It's the fact that you're playing that counts.

    New website now live - www.andrew-gilbert.com

    Current instruments: Roland Atelier AT900 Platinum Edition, Yamaha Genos, Yamaha PSR-S970, Kawai K1m
    Retired Organs: Lots! Kawai SR6 x 2, Hammond L122, T402, T500 x 2, X5. Conn Martinique and 652. Gulbransen 2102 Pacemaker. Kimball Temptation.
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    Retired synths: Korg 700, Roland SH1000, Jen Superstringer, Kawai S100F, Kawai S100P, Kawai K1

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    • #3
      Originally posted by andyg View Post
      A bit of googling says it's a Magnetic Tunnel Junction 00109
      No, the M is the motorola logo. This is one of the Octave transistors. I noticed that on one of the note boards, that a BC270 was replaced with one of these, and a rough equivalent of that is BC109 so I will try some of those.

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      • #4
        More likely to be a general purpose germanium pnp transistor if the circuit is close to vox jaguar. The following link has a bit of a discussion, suggesting you could probably substitute a silicon pnp transistor.

        http://music-electronics-forum.com/t33421/

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        • #5
          I see what you mean about the 'M' being the logo and stand corrected.
          It's not what you play. It's not how you play. It's the fact that you're playing that counts.

          New website now live - www.andrew-gilbert.com

          Current instruments: Roland Atelier AT900 Platinum Edition, Yamaha Genos, Yamaha PSR-S970, Kawai K1m
          Retired Organs: Lots! Kawai SR6 x 2, Hammond L122, T402, T500 x 2, X5. Conn Martinique and 652. Gulbransen 2102 Pacemaker. Kimball Temptation.
          Retired Leslies, 147, 145 x 2, 760 x 2, 710, 415 x 2.
          Retired synths: Korg 700, Roland SH1000, Jen Superstringer, Kawai S100F, Kawai S100P, Kawai K1

          Comment


          • #6
            GEM part number MTJ 00109 crosses to a 2N5449 per the Organ Cross Reference Master. General purpose audio NPN silicon transistor.

            td
            Servicing electronic organs since 1969.

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            • #7
              Originally posted by tucsondave View Post
              GEM part number MTJ 00109 crosses to a 2N5449 per the Organ Cross Reference Master. General purpose audio NPN silicon transistor.

              td
              Yeah, some BC549s seem to be working. Thanks. I'll compare with the BC109s when they arrive.

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