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    Substitutes for uPA74 uPA75 double transistors

    I recently acquired a Japanese amplifier with a dead channel. I tracked down the fault to a dual transistor uPA75. The base–collector junction is shorted, which in turn burned the R7 resistor. None of the other components seem to be affected. I am looking for a good substitute for this dual...
    • fox
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    • learning substitutes transistors
    • Replies: 9
    • Forum: Solid State
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