PS2 Most common: PS2 motherboards with no video nor audio. What components to check for? Help!

[shownomercyomer]

I am currently buying broken fat playstation 2 and fixing and restoring them to the best of my ability.
One of the biggest issues with broken PS2 motherboards is --- No display.

I've learned that its usually related with a group of damaged network resistors or arrays near the graphics and emotion chips which I've circled in red in the photo.

Does anyone know any other components to check for? Fuses? Other resistors? Anything else to check for motherboards that can't output A/V aka black screen?

Thank you

 

[gogogadgetman77]

A PS2 with no audio/video can literally be a thousand things. I made a video not long ago about going through the basics first, so make sure you do that first as there are fixes you can make on the A/V port that literally solve half these issues. You can find that video here:

Moving past that to actual component issues, you will find several fuses that go out and can be replaced, there are multiple components that fail near the encoder chip, etc, but none of them are more likely or less likely as they all fail. In order to deal with this you have to use the widely available spec sheets for the console and start checking components one by one until you find something that is out of spec. These can be SMD resistors, oscillators, fuses, and the chips themselves will fail. There is no way anyone can help you on this issue because there are no two or three things going wrong here. Start with your major chips especially the encoder area and start seeing if the chips themselves are out of spec anywhere. If they are start working backwards from there to find what component has failed and then replace it, If you want to move on to the advanced repairs you have to learn how to diagnose the console, because there is no one all be all thing you can do to repair this problem once you rule out the basics.

Luckily for right now motherboards themselves aren't insanely expensive so replacing the motherboard is still an option. This is also going to be important when you have failed chips as scalping good ones doesn't make sense, because you could just fix that board and not have to lift anything. so if all else fails replacing the motherboard is still a viable option. You can see Tinker Mods carries a lot of them and they are pretty fairly priced, which you can find here:
https://www.tinker-mods.com/buy-replacement-parts/playstation-2/motherboards/ps2-motherboard.php
https://www.tinker-mods.com/buy-replacement-parts/playstation-2/motherboards/ps2-motherboard.php

 

[shownomercyomer]

A PS2 with no audio/video can literally be a thousand things. I made a video not long ago about going through the basics first, so make sure you do that first as there are fixes you can make on the A/V port that literally solve half these issues. You can find that video here:

Moving past that to actual component issues, you will find several fuses that go out and can be replaced, there are multiple components that fail near the encoder chip, etc, but none of them are more likely or less likely as they all fail. In order to deal with this you have to use the widely available spec sheets for the console and start checking components one by one until you find something that is out of spec. These can be SMD resistors, oscillators, fuses, and the chips themselves will fail. There is no way anyone can help you on this issue because there are no two or three things going wrong here. Start with your major chips especially the encoder area and start seeing if the chips themselves are out of spec anywhere. If they are start working backwards from there to find what component has failed and then replace it, If you want to move on to the advanced repairs you have to learn how to diagnose the console, because there is no one all be all thing you can do to repair this problem once you rule out the basics.

Luckily for right now motherboards themselves aren't insanely expensive so replacing the motherboard is still an option. This is also going to be important when you have failed chips as scalping good ones doesn't make sense, because you could just fix that board and not have to lift anything. so if all else fails replacing the motherboard is still a viable option. You can see Tinker Mods carries a lot of them and they are pretty fairly priced, which you can find here:
https://www.tinker-mods.com/buy-replacement-parts/playstation-2/motherboards/ps2-motherboard.php

Thanks for the tip as it will help get started to where to look. I didn't realize there's a video encoder chip (IC211) as well. I've seen that video before. Unfortunately it's not A/V port issue. Also there's service manual that shows the electrical flowchart/diagram of the motherboard. I'm pretty new to this and diagrams but determined to learn more. The best idea I can come up with is gathering all the values/continuity of the components of a working board and compare them with the dead board. My goal is to be able to diagnose the problem and be able to fix it without replacing the whole board. Currently I am working on a GH023 (scph50001) board with no audio/video.... If I ever find out and fix the problem I will post updates here.