File:Sega SG-1000 main board (early layout).jpg
Summary
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An SG-1000 main board of the earlier layout, out of its case: NEC D780C-1 CPU at IC1, TMS9918ANL video chip, eight MB8118-12 video RAMs at IC10 to IC17 with ceramic capacitors C14 to C21 below them, the 44-pin cartridge connector, the RF modulator can at top left, the regulator under its heat sink at top right beside the power switch and the second joystick socket, and dipped electrolytics at C5, C11 and C13. A purple wire, added after manufacture, runs from the RF modulator to a joint beside the TMS9918ANL. Downscaled to 2,200 px wide.
Source
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MSX Wiki, https://www.msx.org/wiki/File:Sega_SG-1000-v1-PCB.jpg (retrieved 2026-10-19), used on the MSX Wiki's "Sega SG-1000" page as "Sega SG-1000 v1 PCB".
Author
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Uploaded to the MSX Wiki by user Gdx (10 September 2020); photographer not recorded.
Licence
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No licence is given on the source page. Hosted here, credited to its source, to identify the board and its parts for repair reference.
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:09, 19 October 2026 | | 2,200 × 1,267 (672 KB) | Josh (talk | contribs) | Upload for the Sega SG-1000 pages |
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File usage
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