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Stereo control button problems

Discussion in 'Electronic Repair' started by [email protected], Jan 18, 2009.

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  1. Guest

    I have a stereo which also has a radio and builtin CD changer. If I
    hit the on button the CD changer draw opens, but then I cannot make it
    change CDs and the CDs will not play. I can only listen to the radio
    if it is off and I turn it on by selecting the choice between AM/FM. I
    am sure it cannot be fixed since it cost around $100 around ten years
    ago. I was just wondering what went wrong? Is the "microchip" that
    controls it corrupted? Are there "electronic leaks" caused by the age.
    Just wondering if anyone had some thoughts.

    Thanks

    Tom
     
  2. Arfa Daily

    Arfa Daily Guest

    Bad drawer position sense switch ? Bad laser home switch ? The system
    control micro will often get confused and stuck in a loop, if some expected
    condition is not flagged to it, even if the condition is apparently
    physically met i.e. the drawer may appear to be fully open, but if the
    system control micro hasn't been 'told' that it is, due to the sense switch
    effectively not closing because its contacts are tarnished, it may never go
    back to monitoring the front panel button matrix for the next button to be
    pressed.

    Although system control micros due occasionally go faulty, it is fairly
    rare, and in my experience, most problems that you immediately blame on them
    by instinct, turn out to be caused by some simple external problem, such as
    a bad switch.

    Arfa
     
  3. Jamie

    Jamie Guest

    Check the tray open sensor/switch..

    It sounds like its still trying to open the tray because
    it don't know any better!



    http://webpages.charter.net/jamie_5"
     
  4. Guest

    That fixed the problem. I opened the CD draw and pressed or pushed
    whatever thing appeared you could push or press, and then the problem
    disappeared. I am not sure if it was a switch or not.

    Thanks

    Tom
     
  5. Arfa Daily

    Arfa Daily Guest

    If you could see it and it moved, chances are it's the switch. Wouldn't hurt
    for you to squib a spot of good quality switch cleaner / lubricant in it,
    and then 'work' it vigourously for a few seconds with the tip of a
    screwdriver or whatever you can get in the gap to push it with. Glad you got
    a result.

    Arfa
     
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