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Read Me First
Common Playstation Problems and fixes/FAQ
How to Clean Your PS2 Laser
Precision Laser Voltage Adjusting with O'scope
How to Adjust Voltage for your Laser
Cd Tray Alignment
Find Your PS2 Verion
Power Supply Trouble Shooting
Disk Read Error
Disk Read Error Cont.
Taking Apart Your PS2 Guide
Replacement Parts And Fuse Diagrams
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PS2's that do not power on are becoming more and more common. These problems can't always be fixed, but the majority of these can. Most of these problems result from a faulty PSU (power supply unit). For U.S. PS2's, the psu will convert 120V AC to 12V DC. From there it is transferred to the DC motherboard/main board. Once it gets to the main board its real hard to track and troubleshoot, unless you are a Sony employee with schematics! Schematics are proprietary information, and are NOT available to the public. So I have put together a little PSU section to help you out. :)
WARNING YOU WILL BE WORKING WITH LIVE ELECTRICITY!!!!! PLEASE DO NOT ATTEMPT THIS IF YOU HAVE NO EXPERINECE WITH ELECTRONICS!! BE VERY VERY CAREFUL!!!!
1.) Open your PS2
2.) Get out your Voltmeter
3.) Plug in your PS2
3.) You will want to check the voltage coming out of your PS2. There should be 12V DC leaving the PSU at the rectangular connector piece. The Pin-out is labeled. This is where the voltage leaves the PSU. If the voltages are good a these test points, then you have a good PSU. If they are not good you will have to figure out why.
5.) The next test point you want to test is the resistors right next to where you plug the power cord into. This is a great spot to check to see if you are getting power to the PSU board. Many times these resistors are burned out. Check for resistance on this resistor, ,if it is open then the resistor is bad and you'll need to change it.
6.) Now you have no power leaving the board, and you have good power getting to the board.
7.) Now, check any of the labeled resistors in the middle of the board. If you have no voltage at one point, or very bad or very incorrect voltage, you've gotten closer in isolating your problem. You'll need to continue doing a resistance and continuity check on some of the components that lead to this resistor.
IF you DID get a good voltage move on to some of the other test points . Continue checking until you find a bad reading on one of the test points. Then move backwards, checking components, turn over the board and you can see the paths of the components.
Resistor- Check for resistance, should be resistance designated by the resistors color code . You can go
RIGHT HERE to calculate the resistance for any given resistor code.
Capacitors- Should read open on resistance check. Most mulitmeters wont test for capacitance so there's not much can test.
Inductors- Should read a short on a resistance.
IF your voltage reading are good from the output of the PSU and your PS2 STILL WILL NOT power on, then start removing ribbon cables from other boards. For instance, remove the ribbon cable to the controller port board. Try to power it on again, does it work? If yes then your controller port is shorted somewhere. If it didn't power on, then put the cable back in where you pulled it from. Now remove the CD assembly try it again, did it work? if yes the cd assembly is shorted somewhere.
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This image is courtesy of the video game repair forum. |
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