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CD-ROM tray not opening

Discussion in 'Electronic Repair' started by Sunny, Dec 7, 2003.

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  1. Sunny

    Sunny Guest

    My son complained his CD-ROM tray would not open if he closed the drive
    without a disc in there. Opens no problem if a disc is present.

    I took it apart and found the tray opening mechanism was not exerting
    sufficient force to release the magnetic disc clamp when there was no
    disc separating the magnet from the steel washer it 'sticks' to.

    I didn't see anything that looked like it might adjust the force applied
    by the tray opening mechanism before it decides the tray is jammed and
    gives up, so I took a pragmatic approach and stuck a piece of electrical
    tape over the washer.

    This solution works perfectly, and there's no risk of the tape coming
    unstuck as the washer clips into a plastic housing, but I'm curious as
    to what may have caused the problem and what the 'proper' repair is.
     
  2. The load belt may be slipping a bit, the magnet may be borderline too
    strong - this happens, the motor may be somewhat less efficient than it
    was - maybe a bit of carbon at the brushes - the motor drive voltage may be
    a bit low.

    Mark Z.
     
  3. My son complained his CD-ROM tray would not open if he closed the drive
    Depending on the age of the CD-ROM drive, the proper repair is replacement of
    the belt which drives the drawer load mechanism. If the belt is old enough, it
    will slip to the point where it won't release the clamping mechanism.

    You have to use a replacement belt that is only slightly smaller than the belt
    that was in the drive.

    DO NOT use rubber bands. They are not an acceptable substitute. They have too
    much give and are prone to snapping. - Reinhart
     
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