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Poly 800 Mk1 IC33

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  • cyllall
    Hi Everyone, I have a faulty IC33. IC33 is a TC40H240 CMOS. Any reason why a 74** series equivalent won t work there?. I can t think of a reason unless the
    Message 1 of 2 , Sep 1, 2011
      Hi Everyone,

      I have a faulty IC33.
      IC33 is a TC40H240 CMOS. Any reason why a 74** series equivalent won't work there?. I can't think of a reason unless the voltage is not 5v at that location. (can't test keyboard in bits).

      Thanks
      Martin
    • Michael Hawkins
      It would have to be a 74HC240. ________________________________ From: cyllall To: korgpolyex@yahoogroups.com Sent: Thursday, September 1,
      Message 2 of 2 , Sep 1, 2011
        It would have to be a 74HC240.


        From: cyllall <cyllall@...>
        To: korgpolyex@yahoogroups.com
        Sent: Thursday, September 1, 2011 5:53 AM
        Subject: [korgpolyex] Poly 800 Mk1 IC33

         
        Hi Everyone,

        I have a faulty IC33.
        IC33 is a TC40H240 CMOS. Any reason why a 74** series equivalent won't work there?. I can't think of a reason unless the voltage is not 5v at that location. (can't test keyboard in bits).

        Thanks
        Martin



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