V18 Modbo modchip installation diagram

The very last PlayStation 2 models used the V18 board revision. They were sold in most markets outside of Japan. Matching console model numbers and board numbers are listed below.

You can find the model number on the sticker on the bottom of the console, and the board number is printed on the PS2 main board if you take apart your console. Note that there can be multiple board numbers within a specific model number.

  • NTSC-U/C (USA):
    • SCPH-90001 (GH-071-42)
  • PAL
    • SCPH-90002 (GH-071-32, GH-071-42)
    • SCPH-90004 (GH-072-42)
    • SCPH-90006 (GH-071-42, GH-072-42)
    • SCPH-90007 (GH-071-42)

Note that there are multiple versions of the Modbo modchips available, but the installation diagrams are all the same. Some example versions are Modbo 3.0, Modbo 4.0, Modbo 5.0, and Modbo 750.

For more information about Modbo modchips click here, for more information about PS2 modchips in general click here.

V18 Modbo installation diagram

Modbo modchip pinout

 

V18 Modbo installation diagram (GH-071-42)

V18 Modbo installation diagram (GH-072-42)

Installation tips

Here are some tips I have for you when you are soldering your chip into a V18.

  • Using 30 AWG solid core wire works well for most of the points.
  • Use some thicker wire for the 5V and ground wires.
  • Using thinner wire for the (A), B, G, H, and I pins makes things a lot easier. 36 AWG enamel wire along with some flux and slightly pre tinning the pins on the chip seems to work well for me.
  • Make sure wherever you are putting your chip won’t cause any issues when putting the system back together, PS2 slims fit together very tightly.

Diagram success rate

Here’s a list of people who have successfully modded their console with this diagram. Leave a comment and I’ll add you to the list.

  1. William Quade (me)

Example installations

This section has photos of some successful installations which you can use to get a better understanding of how everything is wired and positioned. Leave a comment and I’ll add your installation to the list

  1. William Quade (me)

There isn’t much room underneath the board so I found placing the modchip partially off the edge of the underside worked well. Both in terms of having the wires short, and so everything went back together nicely.

Here is one installation I did. Some of the holes on the board don’t actually have screws that go through them and can be used to route wires through. Keeping the chip further into the board (less overhang) makes it fit into the case a little nicer.

V18 Modbo modchip example installation (buttom) V18 Modbo modchip example installation (top)

This is an older installation. I didn’t use any of the holes on the board to route wires on this one. I also used thicker wires for the B, G, I, I lines.

V18 Modbo example installation V18 Modbo example installation

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Wer Bn
Wer Bn
April 21, 2019 9:38 AM

Hello
I have the same board
How in the world have you soldered I,H,B,G?
they’re too small

dtch
dtch
May 8, 2019 5:11 PM
Reply to  William Quade

Hi William I’m about to take the leap and am going to order a 5.0 soon. Where do you get your 36/30awg wire? I live in a rural area and the smallest I can find is 20.

edsel
edsel
September 2, 2019 10:48 AM
Reply to  Wer Bn

i used magnifiying glass 10x and 20x with LED light to see it clearly.

Kimbapslice
Kimbapslice
June 19, 2019 2:18 AM

SCPH 90001 GH-072-42 here. Finally, success but what a pain in the butt! It took me about 2 weeks and multiple failures booting to black screens. I had to remove the Modbo 5. Finally today, I tried to very slowly solder on the bios wires and those impossibly small 4 wires I, H, B, and G. I think the black screens were because of the bios wires lifting the chip legs. I used different points for the ground and 3.3v (I found a random post on reddit with a picture of a recently acquired slim with a modchip installed). I… Read more »

Moka
Moka
July 21, 2019 9:20 AM

I put one end of the wire at the letters

Where do I put the other

Moka
Moka
July 22, 2019 6:10 AM
Reply to  William Quade

I don’t see any letters on the board

Moka
Moka
July 22, 2019 6:15 AM
Reply to  Moka

Or at least I don’t see them as clearly as the chip

Moka
Moka
July 22, 2019 6:17 AM
Reply to  William Quade

Ah I get it

Moka
Moka
July 22, 2019 6:17 AM
Reply to  Moka

Next question

What is the big blue wire for

Moka
Moka
July 22, 2019 6:20 AM
Reply to  William Quade

Alright just one more question

The hole that says gnd in it

Do I make the wires touch the floor or just simply hot glue them to the sides

Moka
Moka
July 22, 2019 6:23 AM
Reply to  William Quade

Okay I think that’s all the knowledge I need

Just gotta wait for the chip to arrive

Moka
Moka
August 30, 2019 6:17 AM
Reply to  Moka

I have a question how do I stick the wires to the chip without using an air compressor

Moka
Moka
July 21, 2019 9:21 AM

Is there any chance of finding a step by step video on this

Moka
Moka
September 4, 2019 9:29 AM
Reply to  Moka

How do I solder it without ruining the chip itself from the heat

NotU
NotU
September 7, 2019 3:11 AM
Reply to  Moka

Pay someone who knows what they are doing.

Moka
Moka
September 27, 2019 4:49 AM
Reply to  Moka

Can j stick the wires to the chip using duct tape

Van
Van
November 4, 2019 2:56 AM
Reply to  Moka

Moka, don’t take this in a mean way, but your questions are bordering on ridiculous, actually the last one smokes past any border and goes off the deep end. You seriously need to consider taking this job to someone who knows what they’re doing. I’m less worried about your soon to be ruined ps2, and more worried about you burning your house down with a soldering iron. Seriously buddy, take it to a pro.

edsel
edsel
September 2, 2019 10:47 AM

I successfully installed modbo 5.0 modchip to my PS2 scph-90004 using your guide. Able to run OPL games on my console without the use of FMCB memory card.

edsel
edsel
September 2, 2019 10:53 AM
Reply to  edsel

Thank you William 🙌

Joshua
Joshua
November 25, 2019 2:53 AM

Hey William, great placement on the chip. I’m about to do my 9004 just a quick one. How did you get the metal plate off to expose the top side of the board? Mine seems to be really stuck on. I’ve taken all the screws out (counted 7)

Joshua
Joshua
April 28, 2020 1:46 AM
Reply to  William Quade

Never got around to sharing my install with you. Thanks for all your help and guides, Fun mod to do! Just a quick note to all, when disassembling slims make sure you try not to lift the ribbon cable on the laser unit. I lifted mine slightly and ended up scratching some discs as the ribbon was protruding up by a few mm. Easy fix just glue the ribbon cable back down
https://imgur.com/4hYnAfk
https://imgur.com/Wm7f7sY

Dane
Dane
December 13, 2019 8:16 AM

What gauge wire do you recommend/use for the 5V and ground wires?

Neil
Neil
February 16, 2020 7:08 PM

hi william, i was wondering if you had higher resolution pictures of the V18 Modbo modchip installation diagrams?

Zane Shaw
Zane Shaw
March 23, 2020 4:17 AM
Reply to  William Quade

comment image
Higher res for the 072 but a different language. Hope this helps!

Memer
Memer
February 23, 2020 11:15 AM

Thanks for all this information William. I enjoyed installing modbos on my v7 and v15. I recently i got a cheap v18, but the disc controller wires look impossible to solder. Currently waiting for some 36awg wire and i ll give it a shot i guess. I have zero experience with enamel wire, but it looks like it does not have any insulation around it. Is this true? Or is it my eyes playing tricks on me? Have you by any chance tried to look for alternative wiring points for those? I tried but my multimeter is not great, and… Read more »

Memer
Memer
February 23, 2020 1:42 PM
Reply to  William Quade

Oh i see.
Thanks a lot. I ll give finding the alternative points a try at some point. IF i succeed i will post my finding here

The Magpye Trader
The Magpye Trader
March 29, 2020 12:09 PM

Any alt points for the Reset pad? Trying to repair a botched install sent in to me and they ripped the pad clean off.

Phil
Phil
April 5, 2020 12:44 PM

hello everyone, I would like a hand. I should modify a Playstation 2 with motherboard code:
GH-071-42.
The modification chip I should use is “Modbo 5.0”. what scheme do I use? Do I use the same scheme as 4.0?
Thank you all.

Phil
Phil
April 5, 2020 12:59 PM
Reply to  William Quade

ok perfect, thank you. One last thing that stops me a little is at step number 5 that the SX point has to be welded. Do I have to weld it on both sides? Or just on the “condenser” side?

Maniac Phoenix
Maniac Phoenix
April 11, 2020 6:59 AM

Hi, this might be a stupid question but can I use any soldering iron to install the modchip?

K3ksKuchen
K3ksKuchen
April 15, 2020 6:07 AM

Success!
First Try Modbo 5.0D installation in my PAL SCPH-90004 (GH-072-42) following the Diagram you posted (actually the higher res version i found in the comments here).
Thanks!

Paul
Paul
June 9, 2020 12:21 PM

Hey
Will this chip work with SCPH-90008? It’s not on your list

Paul
Paul
June 9, 2020 12:43 PM
Reply to  William Quade

Thank you

Nicolas
Nicolas
July 15, 2020 6:17 PM

Hello how are you ? I looked a lot for an electrical diagram to change the modchip of my PlayStation 2, which is a scph90006 and I didn’t find it, so I finally had the brilliant idea of ​​searching in English and now I’m here on this wonderful page. I have a question, is it true that the wiring diagrams for installing the modchip are the same? I still can’t believe it. Just excuse the writing, I speak another language, so I had to use a translator

John
John
July 30, 2020 7:54 AM

Done!

116889915_1658603777654166_8368893009977342141_n.bmp
John
John
July 30, 2020 7:54 AM
Reply to  John

and the back side

116711216_950879742007233_6200292331292922608_n.bmp
James
James
September 6, 2020 10:46 PM

Hey everyone! I am really looking forward to starting this project but I am a little confused about one of the pictures. I have a GH-071-42, so the first set of pictures. I am looking at where the SX wire attaches to the board and it almost seems like you need to bridge the ends of the two components (the blue drawn line seems to cover both). Looking at my motherboard, there are four components in a row, and picture shows the blue line covering the third (yellow) and fourth (black). Could I get some clarification, please and thank you!… Read more »

Last edited 2 months ago by James
titifayls
titifayls
September 19, 2020 12:26 PM

Perfect editing for 72-42 , after testing i noticied that DVD films don’t work in ” AUTO” mode , you have to put “DVD” mode
To be specified for this v18 because it’s the only version that does this

Last edited 2 months ago by titifayls