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.
my player was fine until I played a music cd and now the little square box with the laser doesn't seem to be able to move hence it is not turning.
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Re: Permenant "Unknown Disk"
Hi and welcome to FixYa,
Initially, pls try and clean the laser optics with the use of a CD disc cleaner. Additionally, perhaps you can open the DVD and clean the inside with a can of compressed air. While it is open, you can also apply a bit of lubricant on the long metal rod that serves as guide rail for the lens carriage to move on.
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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.
If the region setting is correct and won't even read a cleaning disc, there's not much you can do. Either the DVD drive or the Main board (aka MPEG board) is faulty and will have to get it repaired. I'm not sure about UK, but in Australia, Bush manufacturing warranty period for DVD players is 12 months.