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Subject: Poly 800 Mk1 IC33

From: "cyllall" <cyllall@...>
Date: 2011-09-01

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