SCPH-90000 Matrix Infinity Diagram

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Originally Posted by Gradius

This description is only present on BIOS chip.

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So it's B6150B and D0020

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Originally Posted by darthcloud

So it's B6150B and D0020

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Thanks, correct one is B6150B D0020U.

Btw, those are indeed v18.

Finally here is a good example:

http://www.digitalanime.com.br/HT/SCPH-90001a.jpg


http://www.digitalanime.com.br/HT/SCPH-90001b.jpg

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Originally Posted by Gradius

Finally here is a good example:

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Not the same motherboard as mine if you look at the noard number, but other than that it's look like the same.

http://www.brisbane-mods-brisbane-mo...-GH-071-42.jpg

Just installed a matrix infinity green dot into an SCPH-90001cb but it had this motherboard revision.

The infinity didn't work, took teh chip out, left the wires intact and installed a modbo 4.0 and it booted up. :crazy:

7900x and 90000x both need a 1k resistor between W on chip and GND to get it to work if your using Matrix Infinity (green dot) :) Sony did a litle change there so values are not the same as they where.

For 90000x you can use the modbo 745 install pics just remember the resistor.
and for 7900x http://psx-scene.com/forums/420752-post123.html allready reffered to in another post on this page. Also here remember the resistor!

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D-BlooD
Xunlock

Recently I have problem with 90002 GH-71-42 board.
I have installed Modbo4.0 in all other PS2's and so far so good until this model.

With the Modbo installed, the PS2 does not always boot. By boot i mean I don't see 'matrix' logo.

It works from cold start then about 10 min late, if you hit reset, the PS2 acts like no chip installed. If you try more rests , 2 out of 10 will boot. I have tried 1k resistor fix, and PNP transistor fix still same problem.

To me, it seems that the code for modbo4.0 needs to be fixed in order to fix this issue and I hope guys behind modbo4 are aware of this problem.

http://www.infinitymod.com/cgi-bin/m...=chip_infinity

if that helps

Quote:

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Originally Posted by wmb88

Recently I have problem with 90002 GH-71-42 board.
I have installed Modbo4.0 in all other PS2's and so far so good until this model.

With the Modbo installed, the PS2 does not always boot. By boot i mean I don't see 'matrix' logo.

It works from cold start then about 10 min late, if you hit reset, the PS2 acts like no chip installed. If you try more rests , 2 out of 10 will boot. I have tried 1k resistor fix, and PNP transistor fix still same problem.

To me, it seems that the code for modbo4.0 needs to be fixed in order to fix this issue and I hope guys behind modbo4 are aware of this problem.

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Weird mine has also GH-71-42 and my modbo 4.0 work fine (exept autodetect psx/dvdv) but my model is 90001 NTSC.

Quote:

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Originally Posted by wmb88

Recently I have problem with 90002 GH-71-42 board.
I have installed Modbo4.0 in all other PS2's and so far so good until this model.

With the Modbo installed, the PS2 does not always boot. By boot i mean I don't see 'matrix' logo.

It works from cold start then about 10 min late, if you hit reset, the PS2 acts like no chip installed. If you try more rests , 2 out of 10 will boot. I have tried 1k resistor fix, and PNP transistor fix still same problem.

To me, it seems that the code for modbo4.0 needs to be fixed in order to fix this issue and I hope guys behind modbo4 are aware of this problem.

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i didnt know modbo and matrix were the same chip???
apart from that i never heard anything good about modbo, to me i think its just a shit chip, and a cheap one at that

cheers