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TechGallery » Video Game Tech » Sega Master System - 50/60 Switch

IMG_0238

IMG_0238

Remove lid
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IMG_0239

IMG_0239

Remove shielding. The extra stuff near the voltage regulator is an s-video buffer circuit, pics of which are also available at this site.
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IMG_0241

IMG_0241

See the "NTSC/PAL" spots right next to the NEC chip?
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IMG_0244

IMG_0244

Flip over, desolder connections, and cut trace to center connection.
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IMG_0245

IMG_0245

Locate a good spot for the switch. Nothing used the SMS expansion port, so that's a good area.
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IMG_0248

IMG_0248

Mark, drill, solder wires to switch, and test fit. Ensure the shielding doesn't contact the switch.
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IMG_0249

IMG_0249

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IMG_0247

IMG_0247

Solder the wires to the right spots, and secure the cable.
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IMG_0250

IMG_0250

IMG_0250
IMG_0251

IMG_0251

IMG_0251
IMG_0252

IMG_0252

Put 'er back together.
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