Laser goes up and down

[gigge]

Hi!

To resume the old help me out thread..

http://www.ps2-scene.org/forums/showthread.php?t=39987

I did remove the duo2 chip, and all wires, cleaned mobo and it looks fine.

It spins up and sound like it is reading and the laser head part goes up and down... (some times it sound likes it touched the dvd disc...)
and nothing... .-(

Laser light is ok i can see a red little spot..

NO DATA on loading screen.

[gigge]

Did lower DVD pot to 860

This gives me a GOLD DISC on Loading screen.

I try to start the GAME, it spins and sends me back to Load screen (Gold Disc).

(I remeber that i had a similuar problem whit anothe ps2 and laser..
Just installed the mod chip and it did load... )

But i want to know how to fix this ERROR...


Will try to chip it tomorro..

[N£TM£ÇH]

Installing another chip wont fix the problem so i wouldnt do that. Did you try adjusting the white cog and the azimuth ? Is the khs-400c laser the original laser ( maybe it had a open faced laser in it ). Possible you have a tiny solder ball shorting 2 pins on the big dsp chip. That can cause disc read errors. Try taking a air compresser and blowing the board, that could free up a solder ball. Do you have access to a magnifying glass ? Check over the dsp pins.

[gigge]

Hi!
I did adjust the white cod and the azimuth !

Mobo is is clean as it can get, dot have pressure air, but i have a industrial vacume cleaner....


" Check over the dsp pins."

where are the DSP pins ?

Did clean it again!!

Same reult as before..

Did some more adjust on cog and azimuth, result = dvd movies are playing..
and bad game boot rate..

[gigge]

do i need to modify the motherboard for the laser change ? ?

its a GH-015

And i came with a 400c laser.

[N£TM£ÇH]

what brand media are you using ?

[gigge]

Most originals DVD games and Movies has been tested.

And DVD-R media is Yuden and TDK, some Ritek And INFODISC has been tested..

I think this laser is allso some kind of funky..
took it from a working ps2 (Not new laser, only 6 month old ps2.)