DVD PLAYER NOT READING DVD ..

If  without any  apparent reasons  your  DVD  player display will read no DVD .

One of  main reasons is that  dust or dirt accumulates on the DVD crystal laser eye centered  inside  the DVD. 

Make sure when inserting a DVD its always should be free of dust use  DVD cleaner from time to time  it will remove dust  automatically within couple of minutes.

DVD cleaners cost any were from $10 and up ..the least expensive will do the same job.

The best way to clean the  crystal  eye is to  remove the DVD player  top cover and gently use Q Tip with a touch of rubbing  alcohol  and gently wipe the crystal eye. 

 Good Lack