PM-41 ONEchip modchip installation diagram

.Towards the end of the PlayStation 1’s life Sony released a slim model called the PSone, or SCPH-10x. Many of these systems have PM-41 boards inside, which is what this page covers. Some of the boards are PM-41 (2) and require you to use a different diagram. The model is printed on your board if you take apart your console.

For more information about ONEchip chips click here, for more information about PS1 modchips click here.

PM-41 ONEchip modchip installation diagram

ONEchip chip pinout

ONEchip modchip installation diagram

Above is the installation diagram. It is from

Installation tips

Here are some tips I have for you when you are soldering your chip into the PM-41.

  • Cut your wires to be as short and direct as possible.
  • Pin 2, and 6 can be tricky. Don’t push on the components with your soldering iron or they might get knocked off the board. You can use tweezers to carefully solder them back on one side at a time, the orientation doesn’t matter.
  • Make sure the wires you are soldering don’t come into contact with other components or legs of chips.

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. Nobody yet.

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.

  1. None yet.

Leave a Reply

4 Comment threads
9 Thread replies
Most reacted comment
Hottest comment thread
5 Comment authors
JoshWilliam QuadeM.DaSilvaDamianMobCat Recent comment authors
newest oldest most voted
Notify of

The original un edited diagram comes from you should always give credit where credit is due


Hello again

Do You know if length of wire affects only booting games? Or it could also affect reading discs?



Hi! Just successfully installed this modchip on my PSOne, works a treat!


Hello, I just used the diagram and it seems to have worked fine. Only issue I found was with the PSOne not recognizing genuine and burned games the first few times I tried. But after it stopped playing up it just worked. Is this normal for the onechip. will the PSOne play the NTSC games at 60htz?