Site hosted by Build your free website today!


Ultimate Play Station 2 Repair Guide

If You Did Not Receive This Guide From Please Contact Me!

  • Please read the following disclaimer VERY CAREFULLY and do not proceed unless you think you are capable of these repairs.

  • Caution! If you have any warranty left, always claim a warranty repair instead of doing any work yourself. If you open your PS2, you will break the warranty seal and the warranty will be VOID!
  • Disclaimer: This guide is NOT GUARANTEED to fix your PS2 as faulty parts do occur. However, in many instances this guide will allow you to restore your PS2 to its former glory. BE WARNED though, improper use of this guide can render your PS2 virtually useless, or at best, destroy more voltage critical components. Proceed at your own risk. I take no responsibility for damage caused by improper use or accidental damage to any parts of your PS2 while you have it open.

  • Also please note that lethal voltages of 110/230 V will be present on the board when it is powered up so please remove power from the machine BEFORE opening it. Take care not to touch any live parts of the board. Preferably, touch nothing, which you are not specifically told to touch and, even then, only for as short a time as possible handle the boards very carefully, and by the corners of the board only, to avoid chance of damage to the delicate components.

  • Lastly but by no means least, static electricity can damage various parts of the board. Please ground yourself (by touching an earthed metal point such as a water pipe) at regular intervals to prevent electrostatic discharge (ESD) from building up in your body and damaging the board. Alternatively; invest a few pounds in an electrostatic wristband to keep you earthed throughout the whole procedure.

  • Also, please note: Laser Radiation from CD players CAN blind you. Under no circumstances, should you look directly into the laser eye, even if the power is not on, just in case.




This is the easiest thing you can do in any attempt to fix your PS2. While it hardly ever works, it only takes a minute or two, and should be done first before you take apart your machine.


1) You must be in the "main menu" screen of the PS2 console, the first screen that comes up when you start   

    with no disc in.

2) Press the "triangle button"

3) Select "Console" from the top using the up directional buttons and press the "Triangle" button

4) Select "On" using the up and down directional buttons and press the "X" button

5) Insert a disc. The console automatically starts the diagnosis.







10 Screws at base of PS2 Version 1, 2 and 3 
USA SCPH 30001 Version 1 = Serial Number begins with U1 
USA SCPH 30001 Version 2 = Serial Number begins with U0 
USA SCPH 30001 Version 3 = Serial Number begins with U1 Date Code 1A 
USA SCPH 30001 Version 3 = Serial Number begins with U2 Date Code 0D 

8 Screws at base of PS2 Version 4, 5 and Electrical warning stamped on the bottom. 
USA SCPH 30001 Version 4 = Serial Number begins with U0 
USA SCPH 30001 Version 4 = Serial Number begins with U1 
USA SCPH 30001 Version 4 = Serial Number begins with U2 
USA SCPH 30001 Version 4 = Serial Number begins with U3 
USA SCPH 30001 Version 4 = Serial Number begins with U4 
USA SCPH 30001 Version 4 = Serial Number begins with U5 
USA SCPH 35001 Version 4 = GT3 Edition 

3900X PS2 (39001, 39002 ...) - New Version 7 PS2:

All the PS2 model SCPH 3900X is the New Version 7 PS2 where X can be any number like 1, 2, 3 etc..
Example: SCPH 39001 is the USA Version 7 PS2; SCPH 39002 is the Australian PS2 Version 7

NOTE: The 30001R can be Version 4, Version 5 or Version 6. You check the Expansion Bay of your PS2 and see if there is a screw in the Expansion Bay. If there is a screw in the Expansion Bay similar to the one indicated by the Red Arrow in the following picture, then your PS2 is Version 5 or Version 6. Otherwise, it Version 4.




To further identify whether you have a Version 5 or Version 6 PS2, you have to open up your PS2 and check the main board of your PS2. The difference between Version 5 and Version 6 PS2 30001R model is shown in the following image.




Bios Number Identification:

The only way to identify the BIOS number of your PS2 is to open up your PS2 machine and have a look at the motherboard; there will be a black chip with writing like the example below. In this case, the BIOS number is "010"

C 2000 SCEI 
D 110 010 


Date Code Identification:

To identify the Date Code of your PS2, you only have to read the label in the back of your PS2 and refer to the picture below:





A very common failure, which seems to crop up on some of the earlier PS2 models, is where the power supply fails for whatever reason. When switched on there is no life and often, the internal fuses (or sometimes the fuse in the power lead) blow.

Very often, the fault lies with a very simple component on the power board. The usual component is a diode, of which there are four similar ones. Often though, the same diode fails each time. This is the third of the largish diodes, arrowed in the following picture.



Be very careful when working on the power board as it contains dangerously high voltages even when not connected to the mains. This is because capacitors can remain charged for some number of hours or days. Take all normal precautions before working in this area. In addition, handle the board as little as possible

Check the diodes with a continuity meter. If it shorts then it has blown and should be replaced with a 1 Amp diode. You should also test the two board fuses for continuity as one (or both) of these can be blown by the over current. You may also have to replace the main fuse in the power lead as this can go at the same time.




When you get the dreaded Disk Read Error, it normally occurs for one of two reasons. Either dust has built up on the lens of the laser mechanism, or the operating voltage of the laser has drifted off slightly due to heat and age. Of course, occasionally there are actual failures of components, which cause this, but these are the main two reasons.


Tools required by this guide are (not all are required for all parts however):


1)     A normal sizes star (Phillips) screwdriver.

2)     A very small Phillips screwdriver.

3)     A small, flat screwdriver.

4)     Some Isopropanol alcohol (IPA)

5)     A few cotton buds

6)     A little mechanical grease. (Iíve used Vaseline before)

7)     A can of compressed air.

8)     An oscilloscope.





1)   Remove any CDs from the unit and unplug all leads and memory cards.

       Turn the unit upside down and use the small, flat screwdriver to pop out all the little plastic

       and rubber screw covers.



2)   Take your normal sized Phillips screwdriver and unscrew all the screws.





3)  Try to write down where each part comes from (including the screws as they have to be returned to the 

      same location at the end. Stick them in a tub to keep them safe.



4)  Turn the unit back up the right way, holding it all together. Place on the work surface and gently ease

      the case open. You may have to tilt the lid slightly towards the front, and slide out to avoid the CD tray.

      BE CAREFUL not to damage the eject/power button ribbon cable, as these are very fragile.




5)  Remove the 4 tiny screws from the CD drawer top, being very careful not to cause any damage.




6)  Gently lift off the lens casing and you will see the slide tray underneath.





7)   To remove the slide tray you have to remove the two small screws, which are located the left hand side

       of the tray.




8)  Gently pull the tray away from the rest of the unit by carefully sliding it all the way to the front until it

     has cleared the lip on the right of the tray. Look for any damage or wear, as this could be a cause of

     the unit malfunctioning. If you have compressed air give a few little squirts to any places, where you

     see dust, but you must be careful not to damage the laser lens.




9)  Take a cotton bud and careful place some of the alcohol on it (but not so much that it is dripping

     everywhere). This alcohol is the same (or similar) to the small bottle of alcohol which is in audio and

     video cassette cleaning kits. This is probably the best way to locate a source. Locate the lens (the circular

     glass part) and very gently rub the cotton bud around the lens in circular motions for about 30 seconds,

     being very gentle. Once done, flip the cotton bud over and dry the lens with the other end for about

     10 seconds.




10)  The laser part slides on rods to reach different rings of the CD. These can become clogged up with dirt

        and dust, making movement difficult. So, take a clean cotton bud and clean the slide rods thoroughly,

       making sure you get to all parts and give a good clean.




11)  The spin rod controls the movement of the laser and is greased to allow smooth frictionless movement.

       Clean the surface of the spin rod. If you have some grease to replace with then remove all the dusty

       grease (or as much as you can) and then apply some fresh grease. If you have no grease to replace with

       then just remove any excess dirt but try to leave a little grease, as it is required for the mechanism to




12)  Clean the little cogs too so that all possible avenues are covered.




13)  You have now completed the cleaning process. This often cures read errors and should always be

       attempted first. Reverse the dismantling process and put the machine back together, making sure you

       DONíT TRAP the eject / power button ribbon cable, as this can cause serious problems for you if it




14)  Power on the unit and try to load both a CD and a DVD game. If all works fine then CONGRATULATIONS

       on completing the guide successfully. If however there is no change then you should proceed to the  

        next step - Adjusting the Disk Mechanism.






Follow steps 1-6 above again to get the PS2 unit dismantled


After the cover is off the disk tray, you will need to plug the unit back in, (The unit needs to be hooked up to a TV as well to test it while you have it open. You should have a DVD movie, a game disk with a silver or gold back and one with a purple back in order to fine-tune the system to play all three). It will be necessary to have the unit powered up to perform the repair. Press the eject button so that the tray slides forward exposing the undercarriage. At the back of the unit, you should see a small white, geared wheel about the size of a quarter. This little wheel can cause many of your problems.

This wheel changes the angle in which the disk is held. You will notice that there is a small metal tab, which is holding the wheel in place. Take a permanent pen and mark the point on the wheel that meets the tab. That way you will always know the original position that the wheel was in. Now that the original position has been marked, feel free to spin the wheel for a few full rotations in order to see how it changes the angle. It will only alter the angle a few degrees before it goes back to zero, after it reaches the maximum angle it will go back to flat after each full rotation. Once you have played with it to see how it works, put the wheel back to the original position that you have marked. Then advance the wheel about 1/8 of a turn and place the disk tray cover back on top of the disk tray. (You will not need to screw the tray cover back down in order to test the machine; you will only need to hold down the cover with your fingers while trying to load/test a disk).


Now place a DVD in the tray and press the eject/close button in order to close the tray and load the DVD (hold down the cover as explained above). Wait to see if the DVD loads, you may have to use the browser in order to load each disk you test. If the DVD loads, eject it and load a silver backed disk, if that loads try a purple backed disk. If all three loaded successfully, congratulations you are finished. If not, remove the tray cover, eject the disk and advance the wheel another 1/8 turn and repeat the process. It just a matter of finding an angle that will facilitate the operation of all three types of disks. Once you have found the proper angle and the system is operating to its full potential, put it back together and start playing games again. I also do not recommend placing the PS2 on its side once you have fixed it. Although Sony says, they recommend it in the owner manual, there have since seen internal Sony documents retracting the statement and attributing many malfunctions to storing and operating the unit on its side. Keep it flat at all times!!


If your unit is still not working then you will have to adjust the laser voltage. This stage is the most deadly to the PS2 laser if not done correctly. If you are not confident in your repair abilities then please donít proceed with this as you may end up making matters worse.





Read these instructions all the way through, and make sure you understand all the steps before doing anything!



1)  Remove the metal shield covering the circuit board (the shiny one). With the front of the PS2 facing toward

     you, it is on the right. There is only one screw holding it in place, it has an arrow pointing toward it.



2)  Remove the expansion bay plate (the dull one with holes). With the front of the PS2 facing toward you, it

     will be on your left. There is only one screw holding it in place with an arrow pointing toward it.




3)  Lift out the expansion bay housing. It is attached to the circuit board by a short ribbon cable. Under this

     are the laser control screws.



4)   The laser control screws are on a small amber circuit board slightly recessed in the plastic case. You will

       be adjusting one or both of the two small silver screws with a black screw in between them. With the

       front of the PS2 facing you, the silver screw on the LEFT controls the voltage for the CD reading. The

       silver screw on the RIGHT controls the voltage for the DVD reading. I suggest putting a small dot, with a

       permanent pen, in the 12 o'clock position of each screw to help with the adjusting process...



5)     Stand the PS2 on its side (vertically, memory cards at bottom, power button at top) at a slight angle.

        You will not be able to stand it at this angle unless it is done on carpet floor. Having a friend hold it in

        position might be better. Make sure that the expansion bay housing does not come in contact with the

        circuit board, as you will be turning it on, and you donít want the metal housing to short out the board.

        Let it hang down, away from the board.



6)  With the PS2 plugged in (power and video) turn it on. You are ready to adjust the voltage for the laser.

     Only adjust the screw for the type of disc you are having problems with. If you are having problems with

     both, do them one at a time. Remember, now that the unit is on its side the CD voltage control screw is

     above the DVD control screw.


    If at all possible use a non-metallic screwdriver, as static electricity can ruin this portion of your PS2...



7)  Turning the screw clockwise increases the voltage, counter-clockwise decreases the voltage.

     Because you risk of blowing the laser if you give it too much voltage, always start by

    decreasing voltage. In my experience, you generally have to add voltage, but for safety, I suggest you

     reduce voltage first. Using a small screw-driver (non-magnetic & non-metallic if possible) turn the 

     appropriate screw counter-clockwise two degrees. Load in the CD and wait, if you still get a disc read

     error move the screw another two degrees. Repeat the process...




If you still get disc read errors after about 20 degrees of rotation, put the screw back to the 12 o'clock position and start moving the screw clockwise two degrees at a time.

It may take a while, but you will most likely find the sweet spot where your discs begin to read again. I have personally never had to move the screw more than 30 degrees, although I have heard as much as 180 degrees are needed for a modified PS2 to play backup CDR's.



8)  Try a few different trouble discs before re-assembly to make sure you donít need more fine adjustment. 

     As well, hold the PS2 elevated in the horizontal position and make sure it reads while in this position. I

     have found that slightly more voltage (2-6 degrees) is needed to run discs in the horizontal position than

     the vertical position.



9)  Turn off the PS2 and re-assemble it. If this has worked then you should keep it in either horizontal

     position from now on, contrary to what Sony tells you. If not then your last try is to get hold of an

     oscilloscope (you can buy one off eBay for £10-15).




Most laser calibration guides, like the previous one, for the PS2 are all about adjusting the laser potentiometers "blindly" or using a multi meter to measure the resistance of the potentiometers. However, the reason you use variable potentiometers is that every PS2 need individual adjustment, so you cannot just use one reference value. What you need is an oscilloscope and/or a laser power meter to measure what is going on when you turn the pots. It is always best to measure on a brand new well working PS2 to get some reference values to use when you are calibrating a bad laser.


If you have a laser power meter, you just have to put the photo-detector directly above the laser lens and look at the readout. If you are using an oscilloscope, you have to know where to find the RF/Eye Pattern measure points.


Laser potentiometers on the PS2 locations are as follows:



This is a picture from the underside of the PS2 Laser. The pots are marked on the picture. Turn clockwise to increase power and counter clockwise to decrease power. Do not turn these wildly, or you might kill your laser by using too much power, or just be unable to get back to a working setting. Now, get your scope and connect it to the proper test point. You also need to find a good ground connection, if you do not know how you should not be reading this any further. Even if we have not scanned your exact PS2 model, you should be able to find the test point as your board is probably very similar to one of the following pictures:


Japan PS2 SCPH-10000






Euro PS2 SCPH-30004 "v3"





Euro PS2 SCPH-30004 "v4"





Euro PS2 SCPH-30004R "v5"




Adjust your oscilloscope and start measuring on the signal point for your board.



Set the scope at 20mV and 0.2us Sweep. The scope must be at least 20Mhz. When you connect the scope, you should se a clear "eye pattern" signal, like the one above. When you increase laser power, the amplitude (height) of the pattern will increase. Do not adjust to high, or the pattern will "clip" at the top and bottom. You will have to test with several different discs/media as all media have different reflectivity. Therefore, if you calibrate the laser so it will be just below clipping with cd-r media, it might "clip" when using originals. We recommend you take readings from a brand new PS2 to get reference levels. Normal values are 800mV peak to peak with DVD media and 640mV peak to peak with CD media.



Correct signal, nice round curves at the top and bottom



Clipped signal at the top and bottom of the pattern





Clicking is most likely the laser unit moving back and forth trying to access a piece of data. If it cannot find that data it will move back and forth until it does. In the case of a DRE, since the PS2 never finds that data it will continue clicking until you receive the error. In case clicking is loud, or you hear squeaking, it might be a good idea to clean the slide rods that the laser rides on, and then add some oil or grease. Loud clicking can be the result of warped discs in the drive, check to see if your disc is warped if you get loud clicking.






Symptom: Will not play any discs at all, just get 'Disc read error'


Problem: If no mod chip installation has been attempted then as above. If someone has attempted to fit a mod chip then check for damaged components, tracks and stray solder or component pins being shorted by excess solder. Remove excess solder with some solder wick.


Symptom: CD draw will not open


Problem: Could be a few reasons for this. If it's been dropped, the cogs could be misaligned, you will need to take the CD unit apart and reassemble correctly. If someone has attempted to fit a mod chip there could be damage around the part of the board where the wires for pins 5 & 6 are soldered. Check for damage to tracks and excess solder, it is also possible that the BA8510 or BA8515 chip has been damaged. Also it could be the flat flexible cable that connects the power/reset & eject buttons to the main board. Check for physical damage and replace if need be.


Symptom: There is no power


Problem: Either power supply problem or blown surface mount fuse on the main board. First check all SMD fuses on the main board, and the fuse on the power supply board. If the power supply board fuse has blown replace it and try again, if it blows again you need to replace the power supply. If the power supply seems OK check all SMD fuses on the main board. There are 7 on the V3 and about a dozen on the V4 / V5 / V6.


Symptom: I just get a black screen


Problem: Either a blown surface-mount fuse or damage done trying to install a mod-chip. Damage will be around the BIOS solder points. Check for excess solder, clean up with our de-solder wick. Also check for damaged tracks. If it's not due to a mod check all SMD fuses with a multi meter or continuity tester. They should conduct and have a resistance of zero. If this is not the case then replace with fuse of same or similar value.


 Symptom: Joy pad (s) don't work


Problem: This is most likely not a problem with the actual ports but another blown surface mount fuse on the main board or damaged flat flexible cable. Check the cable for physical damage. Replace with our replacement joy pad / memory card port cable from our on-line store. If the cable checks out OK check the SMD fuses with a multi meter or continuity tester. They should conduct and have a resistance of zero. If this is not the case then replace with fuse of same or similar value. If the joy pad port is damage, a replacement will have to be purchased online.