

S MIX replacement
Replacement PCB for broken S-MIX ICs
- Size
- 15.7 × 20.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 20
- Pads
- 68
- Tracks, vias
- 190, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 20 Aug 2020
- Updated
- 2 Jan 2022
Overview
S MIX replacement is an open-source printed circuit board by ManCloud, from the ManCloud/S-MIX-replacement repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 15.7 × 20.8 mm with 36 parts on 20 nets, routed with 190 tracks and 0 vias.
It is built around the LM358D and BC846. Its parts include 16 resistors, 14 connectors, 1 capacitor and 1 IC.
Main components
2README
README.mdS-MIX-replacement
Replacement PCB for broken SNES S-MIX ICs and N64 AMP-NUS ICs
Contributors
- borti4938
- he had the original idea of this board and helped a lot with the redesign.
Changelog
v20210526
- Moved to KiCad
- changed overall layout
- optimized to use single-layer
Nice-to-know
During my investigations I found out, that the S-MIX of the SNES and the AMP-NUS of the N64 are functional identical. I even swapped the chips between consoles and everything worked like a charm.

Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J1, J2, J3, J4, J5, J7, J8, J9, J10, J11, J12, J13, J14, J15 | |
| 6 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R4, R5, R6, R7, R8 |
| 4 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9, R10, R15, R16 |
| 4 | BC846 | Package_TO_SOT_SMD:SOT-23 | T1, T2, T3, T4 |
| 2 | 1k8 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R13, R14 |
| 2 | 22k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11, R12 |
| 2 | 33k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1 |
| 1 | LM358D | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | IC1 |
Questions
How big is the S MIX replacement PCB?
It measures 15.7 × 20.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the S MIX replacement use?
36 parts, built around the LM358D and BC846. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the S MIX replacement KiCad files?
From the ManCloud/S-MIX-replacement repository on GitHub, at the commit this page was made from: the board is S-Mix-Replacement.kicad_pcb and its schematic S-Mix-Replacement.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the S MIX replacement design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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