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Technics SA-DX750 Receiver

Discussion in 'Repairing Electronics' started by Jordan Haining, Mar 6, 2017.

  1. Tony Stewart

    Tony Stewart Well-Known Member Most Helpful Member

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    If you check the DC voltages all around the Pwr Amp IC before/after and look for the cause of DC voltage on the speakers from some fault condition going in, you can debug further. You could also disconnect speakers and bypass the relay protection for more time to measure this.

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    Last edited: Mar 17, 2017
  2. KeepItSimpleStupid

    KeepItSimpleStupid Well-Known Member Most Helpful Member

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    So, you have the RLY pin on those thee IC's that you should look at. There's an overdet and powelimit as well, so maybe you should jot down all of the voltages on the three IC's before and after fail.
     
  3. tt1987

    tt1987 New Member

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    You are right, check the output voltage when they are not enough voltage will make the circuit do not work
     
  4. dave

    Dave New Member

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  5. Jordan Haining

    Jordan Haining New Member

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    I have a friend who's uncle is gonna look at it in his spare time then I will do the repairs on it. Thanks for all the help.
     

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