Advise requested on cleaning the laser in a CDP


I have a NAD S500 CDP which is now about 3 years old. I have used a dry cleaning CD a few times but I always wonder how effective these are ? I was about to take the top off the CDP and see if the laser can be cleaned manualy. Is there any potential problems I should be aware of ? Will I actually be able to get to the laser in the CD transport ?
twist
Most eye glass place carry these and recommend that only this method be used for cleaning PLASTIC lens'es.

I use it on mine, and on the CRT outputs on my projector.

It works like a champ.

loontoon
When my 8-year old transport developed some erratic skipping behavior I gently cleaned the lens using a Q-tip dipped in 99% isopropyl alcohol and dried it with a clean one. The result: the transport wouldn't even initialize CD's. A call to the manufacturer informed me that a new laser assembly offering about 95% of the performance of the original one was available for about $300. In a fit of wishful thinking I pondered whether the alcohol shorted something out. The manufacturer suggested I leave the cover off overnight and retest.

The next day the transport continued to play dumb. I studied the mirror finish on the lens with the aid of a magnifying glass. This worked best at an acute angle because looking directly down upon it did not yield an accurate picture of its topmost surface. Only then could I clean it flawlessly. But despite my best effort the transport still refused to initialize any CD. Clearly my cleaning efforts had disturbed something.

I got to thinking about lenses and focusing and repairs and technicians. I dove back into the unit. This time I noticed my lens rests in an elastic cradle. Apparently the Q-tip's pressure on the lens had depressed the lens out of range, too deeply into the cradle. I pried it back into intuitive alignment with the top of the swing arm in which the lens assembly rests. The result: the transport was working again. Yippee! I was back where I started with a perfectly clean lens. Unfortunately the transport still skipped.

In desperation I returned the unit to the manufacturer who replaced some capacitors and lubed the bearings for $225. Result: no skipping at all and normal operation restored. Ta da! The moral: no condition is permanent. Dig into that NAD and give it a bash.
Loontoon what is it that most eyeglass places carry that I should get for cleaning the CDP laser ?
Warning:
if it ain't broke, don't fix it!!!!
You don't need any cleaning of a lens at all!!!!!
I have had 5 disc players running 16 hours a day, 7 days a week for eight years... never cleaned and always played fine.
I DO clean off the CDs with a cosmetic brush... a big one. If the discs are clean, no dirt (especially a single strand of hair, the worst possible intermittent skip problem maker) gets in.
Just because you think, gee, maybe if I clean the lens, it will be better... STOP!!!
If it works, leave it alone!!!
(I own over a dozen CD type devices with lasers and have had a dozen more in the past)
moral: do not clean it!!! clean the damn discs
Elizabeth is right. Keep your grubby hands off the laser. The laser is on something like an arm which is servo-controlled and very delicate. Also the laser shines through a miniature lens system that is continuously adjusted to maintain focus on the spinning disc. It's a wonder that it works when new. If the player reads the disc at all, but skips, the problem is most likely in the arm control or focus servos.