Question about Alba DVD55 DVD Player

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Permenant "Unknown Disk"

Hi No matter what disk I try to play the DVD just comes up saying "unknown disk" - shall I just bin the player or is it fixable. Thanks

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  • big da Nov 07, 2007

    when i put in disc it says loading .then it says unknown disc!!



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Try cleaning the player with a DVD lens cleaner.

If you're adventurous enough, and the player is out of warranty, you might want to open up the player exposing the lens part. Then, try to eject and close the disk tray and see if the laser diode lits up (avoid staring at the laser light, it will ruin your eyesight! View it from the side not directly into your eye.)

Also check if the spindle spins a little. Or, with the top cover open (this magnetized cover serves to hold the disc firmly as it spins), insert a disc into the tray and close it. See if the spindle spins with the disc.

This problem points most of the time with either a bad laser or misalignment. If misalignment is the case, this could be fixed by carefully turning (very slowly...) a tiny potentiometer located near the laser diode (experiment with the best setting, mark each turn and try any disc with each turn. Be patient)

This fix is not for the faint of heart, and at your own risk. If you're not sure of what you will be doing, leave the servicing to a qualified technician.

Posted on Mar 12, 2008


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