Test IC TL074 CN

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

  1. Coconuttopdrop

    Thread Starter New Member

    Sep 7, 2012

    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?

  2. t06afre

    AAC Fanatic!

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

    Senior Member

    Dec 29, 2010
  4. t06afre

    AAC Fanatic!

    May 11, 2009
    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.