Test IC TL074 CN

Discussion in 'General Electronics Chat' started by Coconuttopdrop, Sep 7, 2012.

  1. Coconuttopdrop

    Thread Starter New Member

    Sep 7, 2012
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    Hi.

    I'm repairing a AMEK mixing board but i dont have an extensor to power the channel's that i'm fixing.
    What i'm doing is comparing some readings on a good channel with the bad channel.

    The EQ section of the board as 4 TL074CN IC's, and some are busted, but i dont have a way to see wich are ok and wich are busted because i cant power the circuit.

    So i need to do some kind of circuit to test the IC's.
    The TL074 brochure has a audio amp circuit (fig.25) wich i can try to replicate, but i have some questions.

    Using a DC power supply, should i feed 12V to CC+ and hook up the ground to CC- and feed 6V to ground?

    Thnks
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
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    Why not just replace all of them. The chip is quite cheap
     
  3. absf

    Senior Member

    Dec 29, 2010
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  4. t06afre

    AAC Fanatic!

    May 11, 2009
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    Also unless the OP have professional desolder equipment. Or the ICs sits in a socket. A hobbyist desoldring process will add a lot of "stress" to the chips that are working.
     
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