Sega Blast City¶
A prized Sega candy cab (1996): its asset is the 29" tri-sync (15/24/31 kHz) monitor, which accepts classic PCBs as well as 31 kHz (Naomi, VGA). A more modern design, JVS-ready. Much is shared with the Astro City.
Identification¶
| Field | Value |
|---|---|
| Manufacturer | Sega |
| Year | 1996 |
| Type | Candy cab |
| Screen | CRT 29", tri-sync 15/24/31 kHz (Nanao MS29xx series), rotatable |
| Controls | 2 players, interchangeable panel |
| PCB format | JAMMA (+ JVS-ready for Naomi & co.) |
| Power | 100 V (Japan) |
⚡ Connector & power¶
| Aspect | Value |
|---|---|
| PCB connector | JAMMA (56-pin edge) |
| JVS | yes (JVS support for Naomi & modern arcade) |
| Monitor sync | tri-sync 15/24/31 kHz |
| Power | 100 V AC (Japan) |
| Consumption | see the archived manual (Sega candy brick) |
| Dimensions | 760 × 939 × 1643 mm (W×D×H) |
| Weight | ~101 kg |
(Sources: Arcade Otaku / Hard*Candy.)
→ Detailed wiring: JAMMA (pinout) + JVS (JVS wiring / JVS I/O board for the Naomi). Button layout: Control panels.
Why it's sought after¶
The tri-sync monitor handles 31 kHz → it runs Naomi, VGA games and HD superguns, on top of the classic 15/24 kHz PCBs. It's the versatile candy cab.
Technical notes¶
- Monitor sync: tri-sync 15/24/31 kHz — the major asset: accepts 15/24 kHz PCBs and 31 kHz (Naomi, VGA, HD superguns) without changing the chassis. Typical stock chassis: Nanao MS2930 / MS2931 (29" tri-sync series) — the MS2930 handles 15/24/31 kHz switching via settings on its remote board.
- I/O: JAMMA + JVS support (for Naomi and modern arcade).
- Power: a Sega "candy" block → Sega candy cab PSU.
- Monitor chassis: geometry/convergence adjustments + recap → see Nanao MS9.
- JIS screws.
Info shared with the Astro City¶
- JAMMA wiring + internal harness → Astro City § Wiring
- Stereo sound → Astro City § Stereo sound
- Disassembly (JIS screws) → Astro City § Disassembly
Internal boards¶
- 🖥️ Tri-sync monitor 29" (Nanao MS29xx) — adjustments/recap like the Nanao MS9.
- ⚡ Power block Sega — exact model.
- 🔗 I/O: JAMMA + JVS support (Naomi).
Mods & repair¶
- Native 31 kHz: an asset for Naomi/VGA with no monitor swap.
- Native RGB, supergun-friendly.
- Recap of the monitor chassis (see CRT repair).
- → Modernising a cabinet (OSSC/GBS, Mean Well PSU, JVS, PC-in-cab).
Manual (archived)¶
- 📘 Blast City manual (Bass Fishing) (PDF) — Source: Arcade Otaku Wiki, archived locally.
Photos / assets¶
(To add: Blast City, tri-sync monitor, JVS I/O, control panel.)
Repair & maintenance
CRT monitor (discharge HV!) → CRT safety + Nanao MS8 / MS9 chassis · Sega candy PSU → PSU repair · recap → Recap.
Sources & attribution¶
- Arcade Otaku Wiki — Sega Blast City — https://wiki.arcadeotaku.com/w/Sega_Blast_City
- Hard-Candy.com — Blast City — to reference — https://www.hard--candy.com/wiki/candy/Blast_City
Review & corrections
How this space is used
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