Amiga_PSU_312503-02

Amiga PSU (Heavy brick) 312503-02 : Reverse engineered schematic / Ki-Cad

Note : This is a 'rough' sketch, reverse engineered from the PCB. The schematic has not been validated, and may not be entirely correct. It also appears there are multiple variants of this PSU with the same reference (312503-02).

Ki-Cad v8 was used to create the schematic

images

The images folder contains front and back PCB images. These were used to create the schematic.

Schematic

Useful resources:

Amiga PSU cap list : https://blog.worldofjani.com/?p=5695

Meanwell RT50B upgrade : https://www.retro32.com/amiga-resources/030720201179-staff-project-amiga-meanwell-psu-upgrade-rt-50b-rt-65b

L296 datasheet : https://www.st.com/resource/en/datasheet/l296.pdf

KIKAD Symbols : https://componentsearchengine.com/part-view/L296P/STMicroelectronics

L4960 datasheet : https://www.mouser.co.uk/datasheet/2/389/SGSTS51597_1-2563801.pdf

KICAD Symbols : https://componentsearchengine.com/part-view/L4960/STMicroelectronics