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Semi-conductor from mid-1980's electronic organ

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  • Semi-conductor from mid-1980's electronic organ

    This doesn't really fit into any forum category, so I guessed at the one I felt was best/closest.

    I am working on a circuit board that has nothing to do with electronic organs, but it uses a semi-conductor, a Texas Instruments TMS3617. In the data sheet, it is titled "Octave Multiple Tone Synthesizer". When I search the internet for info on this item, the most common information I find is that this integrated circuit (IC) was primarily used on PCBs for electric organs in the mid-1980's. My electrical engineer friend has tested the inputs to this IC on the board and confirmed that the inputs are good. My original TMS3617 IC has failed. I bought one off ebay (from China). It was expensive and a long delivery time. It didn't work. My friend felt it was likely a Chinese fake.

    So this is a long way of asking, have you ever encountered this IC before? Might you have any scrap boards that contain it? If so, I would like to buy the board. Of course, if you have the IC not on a board, I'd sure like to buy that too. Thank you for your time.

    FYI, I am brand new to this forum and honestly, not into organs at all (sorry, no offense intended), just trying to get a circuit board fixed. If you are willing and able to help me, please reply directly by email, no forum pm's as I would not be a regular reader here. Thanks.

    Joe (joemagiera at ameritech.net)
    [email protected]

  • #2
    Roland used this IC in various digital piano and synthesizer models. You might check sites that repair Roland gear. Also: https://www.--------/itm/1-PC-TMX361...zjYq:rk:5:pf:0
    Over the years: Hammond M3, BC, M102, B3, four X77s and three PR-40s, a Thomas Electra and a Celebrity, three Fender Rhodes, Roland HS-10, HP-2000, HP-600, RD-600, JV-880, a thing made by Korg (?), two Leslie 910s, 122, 257, 258, 247, two 142s, and three custom-built Leslies. Wow, way too much money spent!

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