Yahoo Groups archive
Thread
2011-09-01 by 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 voltage is not 5v at that location. (can't test keyboard in bits). Thanks Martin
2011-09-01 by Michael Hawkins
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