If the disc will not play, take the following factors into consideration.
Is the disc free from scratches, dust or fingerprints?
Is the disc right side up in the tray?
Is the disc a 'Region 1' disc?
Does your DVD Player support the type of disc you're trying to play? Ex: DVD-R, CD-RW, MP-3 (Check User Manual to be sure)
If after checking each of these factors, the disc will still not play, there may be a problem with the laser or other component of the player. Your DVD Player may require service.
Before requesting service, try these simple solutions first.
Try other types of discs to see if the problem is with specific types or with all media
Clean disc with mild dish detergent and water. Dry throroughly with lint free cloth.
Unplug the DVD Player from power source and let sit for one minute.
Attempt to play the disc again.
If this does not resolve your issue, please use our ASC Locator to find your nearest authorized service center.

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Don't open the case unless its out of warranty... This is the best answer we have right now. We're still making the FAQ's & it was the VCR that kept spitting out the tape & not the DVD players. But if it is a Samsung, still let me know & I'll get ahold of my boss & will have a better answer soon (BUT only if its a Samsung)