Replacing Laser Lens Help

Hi, I'm asking for a bit of direction to my problem, if anyone can help me in any way, I appreciate in advance. And I'm not sure if this thread should be posted in Sony Scape or the help space, but since it's regarding Playstation 2 I'll try it here.

My cousins PS2 starting showing some errors after it falling off my desk. It wouldn't read discs. I had a guy watching it to see what was wrong with the playstation 2 and after some testing, right in front of me, he said that the lens were broke, but only the part where it reads DVDs, CDs were working fine, so to fix it I'll have to replace the lens.

When I asked him the price, it happened to be way to expensive, R$ 400.00 (currency of my country which would cost something about US$ 200.00).

So I came to an idea, I've been thinking about replacing the laser lens myself.
I've seen a lot of those on eBay, and they are not expensive, something about US$15 (non original) and US$50 (original).

The thing is I finding really hard to find a guide of how to change it.
First, I'd like to know if someone here on GFF have ever replaced their own PS2 lenses ?

And I'd like, if someone can help me with, I bit more of information before buying a laser lens, my PS2 models is SCPH-39001, after some research I came to know this is Playstation 2 version 4. I think (I'm not sure) the lens I should get are 400C. Does anybody knows if this is true ?

I'd like to request too a tutorial of how to do it if someone knos where to find it. A friend of mine has volunteried to help me, but since we've never replaced a laser lens before, we're not sure it's going to work good without a guide.

Once again, sorry for boring you people with this. Any help is appreciated.

EDIT:I've found out that my model is version 7, according to a guide I just downloaded at eMule.

How ya doing, buddy?

I've opened it before with no harm done (no more than it already was) and this friend of mine who said would help me have opened his too and managed to fix the problem.

To be honest, the only worst thing that could happned is, nor DVDs and CDs reading.
I can't pay Sony because I live in Brazil and Sony has no support here.

But I appreciate your advise anyway.

There's nowhere I can't reach.

I turned this white circle "thing" after reading a FAQ but it didn't help. But how many degrees did you turn at a time ? 1 ? or something like 10 ?

The only thing I haven't done yet is increasing the voltage of the DVD reader. A lot of FAQs say that will probably solve the problem but I couldn't take the screw off. I'll try this again later.

This thing is sticky, and I don't like it. I don't appreciate it.

I cleaned it with alcohol, it's still the same, reading CDs but not DVDs. Since the CDs are readable I don't belive the position of the lens are wrong. I'll try cleaning some more than because the lens were dirty like hell.

After reading more FAQs and reading more pictures, I realised my cousin's PS2 has a non-original lens, it has those cheap ones, a lot of screws missing, etc. He bought at a "god knows where" place.

Since his ps2 weren't much I ordered the cheap lens, if it lasts at least six months I'll be glad.

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