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PM‐41 diagram

kalymos edited this page 2025-12-24 10:09:52 +01:00

Table of Contents

• About the points
• Installation tips

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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.

About the points

For models SCPH-101,SCPH-103, you can ignore the BIOS points. On the other hand, the model SCPH-102 and SCPH-100, you will have to use the BIOS points. All of the points are fairly easy to solder.

PM-41 motherboard revision number
1-679-335-11
1-679-335-21
1-679-335-31
1-679-335-41
1-679-335-51
1-679-335-61
6P-172143S11-B3

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.
• You don’t need to connect pins one and two of the ATtinyX5 chip. Just desolder the wire.
• If you are using an ATtinyX5, or have a SCPH-101, then ignore pins A18 and D2.
• Use a multimeter to probe around for alternative VCC and GND points closer to where you position your chip for a cleaner installation.
• For the wires that go into the holes, or vias, of the board: it’s easiest to stick a small 30 AWG wire through the hole, then heat the wire and hole while adding solder.
• For DATA, be careful not to bridge solder to a nearby component, or knock the capacitor off the board.