http://www.wikihow.com/Clean-a-PlayStation-2-Lens
This isn't positive..but try re-plug it into the wall...If that doesn't work, You might have to buy a new one...
the ps2 console have a orginal lens so you can put orginal cds only.....other wise you have to change the lens to duplicate ...so you can put orginal and dupilicate cds/dvd .......
The answer to how to clean your headlight lens depends on how dirty your lens is. If it just has bug juice and road grime any good car soap will clean it, just be carefull not to scratch the plastic. However if your lens is really yellowed or the clear coat cracked then you will need kit designed to clean the lens.
spray the lens cleaner on the lens then wipe it out by clean tissue paper......
clean the disk that's in your ps2
Lens Wipes Cleaning Towelettes are perfect for keeping your camera lens clean.
you clean it with water and a hint of alchohol
Check the disc for scratches and/or clean it. Then check if any other games work, if not, gently swab the disc-reading lens of the PS2 with a cotton bud. If these don't solve the problem something may be wrong with the game or PS2 and you should contact the support team at Sony or ask to get the game exchanged.
To properly clean and maintain your camera lens with lens oil, use a microfiber cloth to gently wipe away any smudges or dirt. Avoid using excessive pressure to prevent scratching the lens. If there are stubborn stains, lightly dampen the cloth with lens cleaning solution before wiping. Be sure to store your lens in a clean and dry environment to prevent dust buildup. Regularly check and clean your lens to ensure optimal performance.
toothpaste
You cannot clean your PlayStation 2 lens without opening it. You will have to turn the machine off, unplug all of the plugs and open it to get to the lens.
I got my lens fixed for 1600 rupees, but at some places they won't go lower than 2000.