PU‐7 diagram

kalymos edited this page 2025-12-24 09:46:56 +01:00

Table of Contents

• PU-7 PsNee modchip installation diagram
• About the points
• Installation tips

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PU-7 PsNee modchip installation diagram

The PU-7 was the very first PlayStation 1 board that was released. It is found on all Japanese SCPH-1000’s, along with some SCPH-1001’s, SCPH-1002’s, SCPH-3000’s, and SCPH-3500’s.

This board is unique because it has the pins for S-Video video output along with the RCA video output ports. The S-Video port was only available on the Japanese SCPH-1000, but the pins are still on other systems with the PU-7 board.

About the points

For models SCPH-xxx1, SCPH-xxx2, all the points are on the back, and you can ignore the RESET. On the other hand, the model and SCPH_xxx0, you will have to use the RESET point, and the BIOS points.

Installation tips

Here are some tips I have for you when you are soldering your chip into the PU-7.

• 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.
• Use a multimeter to probe around for alternative VCC and GND points closer to where you position your chip for a cleaner installation.
• Try to position your chip towards the middle of where all the wires need to go, to minimize wire length.

PU-7 motherboard revision number
1-655-322-11
1-655-322-13
1-655-322-13A
1-655-322-14
1-655-322-14A
1-655-322-15
1-655-322-16