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Old-School Console Modding Install Service, Mod kits & Guides
Sega Master System II
Atari
Microsoft
NEC
Nintendo
Panasonic
Sega
SNK
Sony
Power Connector
| Plug Type | Coaxial / Barrel Connector |
| Size | 5.5mm Outer Diameter / 2.1mm Inner Diameter |
| Voltage | 9V DC |
| Amperage | 500mA |
| Polarity | Center Negative |
Output Audio/Video Connector
The Sega Master System 2 only has a single coaxial RF audio/video output unless it's a French model.
RGB Encoder
Sony CXA1145P Pinout
Video Display Processor
Sega 315-5246 Pinout
Controller Port Pinout
| Pin | Function |
| 1 | Up |
| 2 | Down |
| 3 | Left |
| 4 | Right |
| 5 | No Connection |
| 6 | Button 1 |
| 7 | Light Sensor |
| 8 | Ground |
| 9 | Button 2 |
Audio Video Schematics
IC BD M4jr PAL 171-5922A
