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#16036
Ted FletcherTed Fletcher
Keymaster

    You can identify the correct IC because it is the only dual op-amp with a 680 ohm resistor between pins 1 and 2.

    Confusingly, on some slightly later SC2.2 versions, the IC was designated IC9.

    On my ‘re-invention’ of the old SC2 (TFPRO P38) I altered the design of the power supply so that it became a true dual supply with two regulators, but some say that the older version with the slightly ‘sloppy’ power supply had a particular character caused by the power supply deficiency! I don’t think so.

    All the same there are many hundreds of those old SC2s still in use and they have proved to be reliable…… except for this one! :(

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