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Heineken's Garage

  1. Radio Head Unit - Repair III

    .. continuation of Radio Head Unit - Repair II

    CD port not working
    Observed on: 1 EUDM Radio
    Fixed by: PCB repair, replacement of OP amp

    State: Fully understood

    Acid damage to the traces around the CD port OP amplifier can cause the connection to the CD changer to fail.

    Click image for larger version. 

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    severe trace damage around the CD port OP amp mounting point

    The CD port should be removed and cleaned. In addition to repairing ...

    Updated 21-01-2024 at 07:15 PM by Heineken

    Categories
    Uncategorized
  2. Radio Head Unit - Repair II

    .. continuation of Radio - Repair

    Too little Volume and Distortions increasing with Volume

    Observed on: 1 EUDM Radio
    Fixed by: OP amp replacement
    State: Fully understood

    The audio signal path on these radios is fully analogue with several operational amplifiers at various stages. One of them is IC303, a 20 V, 10 MHz quad operational amplifier from JRC/NJM: NJM2060M.

    Click image for larger version. 

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    IC303 at the rear end of the lower PCB
    ...

    Updated 12-07-2023 at 09:28 PM by Heineken

    Categories
    Uncategorized
  3. Radio Head Unit - Repair I

    Introduction
    Issues with the radio head unit is a common fault, affecting nearly all NSX depending on age and climate zone. Capacitor replacement should be the first step to perform, followed by further analysis and repair.

    Diagnostic
    The following error cases and ways of repairing have been identified so far. Almost all of them are caused by capacitor leakage but not exclusively since the radios suffer from normal wear and tear similar to other consumer audio electronics. ...

    Updated 12-07-2023 at 09:15 PM by Heineken

    Categories
    Member's Blogs , Technical Information
  4. Climate Control Unit (CCU) - Repair

    Introduction
    Failure of the Climate Control Unit (CCU) is a common fault, affecting nearly any NSX. In almost any case, capacitor replacement and track repair will fix all issues. Depending on the state of the PCB, further damage to other components can happen, though.

    Diagnostic - Transistor Issues
    The following error cases and ways of repairing have been identified so far. These faults can be caused by major acid leakage affecting nearby transistors.

    Click image for larger version. 

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    ...

    Updated 14-04-2024 at 03:52 PM by Heineken

    Categories
    Technical Information
  5. Gauge Cluster - Tester

    Introduction
    The NSX Gauge Cluster provides a large number of functions and displays, resulting in roughly 60 pins across two green connectors. Testing all of them manually is a error-prone task, requires special equipment and takes a lot of time. To speed things up, it helps to have a tester that provides all of these functions in a compact way and utilizing the original connectors.

    Requirements
    A simple user interface. Usage of the original connectors. Adaptable for multiple ...

    Updated 05-03-2022 at 07:51 PM by Heineken

    Categories
    Member's Blogs , Technical Information
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