Question about Samsung HT-X40 System

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DVD's not playing

Tried cleaning the thing about 20 times. Still won't recognize most dvds. Any other suggestions

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  • MillerNation Apr 19, 2008

    Some dvd's won't play. new Alien Vs Predator plays on 360 and pc but my samsung says unknown disc

  • Anonymous Aug 07, 2008

    does not play dvd but plays everything else

  • dcain92 Oct 06, 2008

    I've had this system for 12 months and 10 days, and now no disk will work (DVD, CD).

  • dhamm56 Dec 13, 2008

    HT -X40 unknown disc

  • lee812 Dec 27, 2008

    Mine is one year old. It was in the shop at 2 months after going completely dead. DVD's started pixellating and freezing the last couple of weeks. Cleaning does nothing. Now, I have the same problem with "unknown disc". My warranty expired 2 weeks ago.



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I used a CD/DVD Optidisc cleaner by Memorex. My player is working find.

Posted on Jan 06, 2009

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This seems to be due to dust and the disc type cleaner doesn't seem to get it. You could take it to a shop and have it cleaned. I did it myself. I unplugged unit and cleaned the whole outside with a slightly damp cloth. Removed 2 screws in front and 3 in back and slid top of case towards back to open. Don't touch transistors or capacitors even with unit unplugged. Sometimes they store a charge.
I cleaned inside by carefully dusting with a small paintbrush while blowing dust out. I then carefully plugged unit in (don't touch anything inside!!) and pushed eject to open the disc tray. Looking into disc mechanism from the rear, underneath the white plastic center washer, you can see the laser head, a piece of glass about 1/4 inch round. It rides on springs. Close the tray and open it again. (You have about a minute before it automatically closes so time your cleaning to not get caught.) Very gently and carefully clean the laser head with a q-tip and rubbing alcohol. Put top back on, putting front down in first and then lowering the back and making sure that the copper contact in the front of the unit goes under the lid and replace the screws.
Mine is working like new now. Hope this helps somebody.

Posted on Dec 27, 2008


My HT-X40 plays cds and mp3's but doesnt play DVD's, this is happening after like 4 months of my purchase. Sasmung DVD's ****.

Posted on Jul 05, 2008

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