I messed up my ps2 hd7 lens...

http://imgur.com/a/hlage

Hi. The bottom lens (big, fixed) was dirty so I turned 2 screws to rise the top lens (small), it gave me more room to clean. Should the small lens be parallel to the floor? Can I compensate (lots of combinations) with the 2 white gears that control height and angle of the whole optical block? (SCPH-50001). Today the ps2 booted up a ps1 game logo and it froze (blue disc). Is there an easy solution for this? Thanks.

 

Buy a new drive or get a KHS-400C. Does it still read PS2 Dual Layer discs.

 

You cannot replace a HD7 with a Sony branded laser, same goes for the drive itself.

Supisiche, do you own an oscilloscope? It is indeed possible to recalibrate a laser using one, and do not try using a multimeter to measure resistance. That'll just make it even harder to recalibrate.

http://consolecopyworld.com/ps2/ps2_laser_adjustment_scope.shtml

 

When i had an SCPH-39001 back in 2015, I replaced a KHS-400C with a HD7 and it worked. Why does Sony detect lasers with a bios? Remember the PS1 days? You could just simply swap the laser and bam, you're done.

 

I bought the machine a few months ago. I can't read DL discs. but some dvds worked like magic

@supersega I don't have that, but I only adjusted the position screws on the HD7.

Picture of the screws locations:

http://imgur.com/a/6i9wv

Video:

 

It should not work at all. Divineo actually offered a service long ago that allowed you to send in your unit and they did some voodoo magic with the EEPROM and let you use a Sony laser, but that is the ONLY way. I have both a HD7 and a KHS-400C and only the KHS would work. And no Steve, the PS1 laser itself was always the same through its life. The only thing that changed between revisions is some of the mechanical parts of the assembly (replacing plastic with metal, shorter or no stubs for supports, different plastic colors, etc.)

That laser is as good as dead now that you adjusted the pots willy-nilly which can kill the diode if set too high. The only real thing that can allow it to work correctly is adjusting the pots correctly using an oscilloscope to get the right wavelengths, if the diode isn't burnt out yet. You might as well try the multimeter adjustment as I don't think its possible to mess it up as messed up as it is now. Here's a guide on how to do that.

http://www.geocities.ws/link642k/RECALIBRATING-YOUR-PS2-LASER.pdf

 

But I didn't change the "DVD" and "CD" pots, just the position screws. In my video you can see how I turned a screw. The pot trick never worked for me when I had a slim

 

Ah, I see now, my bad. I don't see how that could mess it up though. Yes, try raising the white gear, but also make sure you know where the original position was. You can also, in the System Information menu (triangle) enable something like drive diagnostic mode which does something... forget what, but it could make it work again.

 

I know exactly how the gears where set but that was before the cleanup. Turning the screws to the max leaves an ugly slope in the top lens. I was playing a blue disc backup of an old ps1 game, ace combat 3 (I got it many years ago and made a backup, it was the japanese version). The diag. mode won't work because my modchip needs me to press the reset button and the ps2 doesn't save some settings. I'm starting to realize i'm screwed, might get a slim again..

 

Don't say you're screwed, there's probably something that someone more experienced than I can tell you to do.

And if you're looking for a slim, I've got a kinda scratched up silver one, yet refurbed and nice and clean, and maybe we can work out a trade.

 

We can't do bussiness because I live in South America and you are probably in the US (◕‿-). Thank you for your answers. I'll wait a few days before selling my fat ps2

 

You can indeed replace hd7 with 400c. There's a special iso out there that let's you do this. @krHACKen should know the specifics.

 

If I had to replace a HD7 with a KHS-400C, I'd reprogram the MECHACON non-volatile memory with the 400C calibration data, using PS2 LensChanger. Even when I replace the lens with one of the same type I do the PS2 LensChanger thing, to give the new lens a fresh start with a clean nvram...
Sorry if I'm mistaking... @l_oliveira , any thought about a HD7 to KHS replacement and LensChanger ?

 

Hi , what about the 2 white gears (cogs) in the ps2? Do they matter when the lens is changed? In my model the only way to adjust them is by hand (or tool). In my country the HD7 costs almost like 3 mitsumis lol

 

Yes, they matter. Different lenses / laser pickups need different positions. I found the optimal position manually by adjusting the gears two / three clicks / positions at a time with the ps2 running and trying discs after each change.

 

Wow..

 

It's not that big of a deal. Took me all of 10-15 minutes.

 

What if I can do that with my current lens? How would you start from "0" (lowest) position for both gears? I leave the height one at "0" and move the other one (angle) first?

Sucesss! Luckily I had this picture of the HD7 before the cleanup:

http://imgur.com/a/MzvdQ

The picture gave me an idea, so I tried to leave the top lens as flat as possible. And guess what, the screw that controls angle matches pretty much with the first picture (original setting). My eyes now hurt a lot, it was a delicate operation. But I hope this helps if somebody faces the same problem as me in the future. Here's a video of my ps2 booting a dvd game smoothly and fast:



http://imgur.com/a/E9DME (after the "fix")

EDIT: the white gears are poorly set, I don't understand why the lens loads games so fast

 

Doesn't matter, imo. Just choose a starting point and test all positions from there.

 

The new positions have nothing to do with the original ones but the ps2 reads discs better than before, so I will probably leave everyhing like it is now.