Audiovox D1917PK portable DVD player says no dis when there is a disc in???

[doodle's mom]

Why does my portable dvd player say no disc when I put a disc in. It trys to load, but ends up saying no disc.
I have cleaned the disc tried other discs, cleaned the player.

 

[firesplat]

dirty or bad laser 90% its cheaper to replace over repair