Hi,No, you don't need to take it to an authorized Sony repair shop..
When a DVD player does not play, or display "reading", is usually caused by Bad Lens..
When a DVD Lens is too weak to play a CD or a DVD, it takes time to load, or it might not load the CD or DVD..
TO fix this issues,you will need to buy a Lens cleaner to clean up the Lens of the DVD player..
To clean it you will need to buy a CD/DVD Lens cleaner player...
Instruction are with it..
You can purchase the lens cleaner from
http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=DVD+lens+cleaner+&x=0&y=0After cleaning it, ifit does not still play,that means you will need replace the len.
Hope it helped..