On Sun, 23 Mar 2008 05:54:54 -0400, "Eric Cire"
wrote:

I'm thinking of opening up my old Playstation 2 console as I get constant
"disc read error" and so been looking at this repair guide video and noticed
on top of the Ps2 DVD drive it says a warning "Laser radiation when open" so
my question is:

Is there any laser radiation risk when the console/drive is turned off and
unplugged?

No danger unplugged.

The lens cleaner discs are almost useless - only good if some dust
parks itself on the lens. But it is quick and easy and doesn't cost
too much. If that is the case, a good dusting of the whole mechanism
is probably in order.

Sometimes the lens can be cleaned with alcohol and a cotton swab - and
then the problem is often obvious, like a cloudy surface coating on
the lens that you can see. The lens has two sides and if the bottom
isn't sealed, or some residual vapor from manufacture are causing the
problem, it can become dirty and is impossible to clean.

Smoking, cooking, soldering, etc. - all will eventually cause a
problem.

Anything that interferes with focusing will also cause problems.

One of the over clocking web sites had a pretty good innovation for
running the case of desktops under positive pressure - versus the
normal negative pressure that sucks dust and smoke in. The guy
mounted three muffin fans outside his case on the side blowing in,
then used a large automobile carburetor filter over them to filter the
air he was pushing into the case. He put the fans so they were over
the processor and disk drives - looked a little unusual with the
"Edelbrok" air cleaner logo, but if it works . . .
--


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