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Electro Harmonix Electric Mistress problem

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  • Electro Harmonix Electric Mistress problem

    I am working on the above pedal but I don't have the exact schematic. I have three but they're different.The circuit board in front of me has a 47K resistor connected to the transistor's lead in the power supply coming off the 741 IC. I am not getting the 12 volts to power the rest of the circuit.Can you help me?Thankyou.Len in Toronto.

  • #2
    There are some modifications EH suggested to make them more stable and replacing the 100k w/ a 47k was one of them. I'd start by changing the 741 and the transistor or zener on the 741's pin 2. If you have a transistor there, replace it with a 6.8v zener.

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