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
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
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