Repair: Hantarex monitors¶
Hantarex (Italy) = the monitor of European JAMMA cabinets. The MTC-9000 (15 kHz mono-frequency, extremely common) and the Polo / Polo 2 (15/25 kHz auto, later). Standard CRT repair: HV discharge, recap, reflow, and the PSU (Polo).
Identification / range¶
| Chassis | Type | Sizes | Frequency | Use |
|---|---|---|---|---|
| MTC-9000 | mono-frequency raster | 14" / 20" / 25" | 15 kHz | 1980s-90s EU JAMMA cabs — the most common |
| Polo / Polo 2 | auto raster | 25" / 28" | 15 / 25 kHz auto | later EU cabs |
| 9110 / Boxer / 28" | variants | — | 15 (/25) kHz | per cabinet |
Safety (read first)¶
High voltage — discharge the tube
Lethal high voltage held while unplugged → discharge the anode before work. See CRT safety & HV discharge. Isolation transformer for powered measurements.
Common faults¶
| Symptom | Likely cause | Lead |
|---|---|---|
| Overvoltage / excessive HV (MTC-9000) | a capacitor goes OPEN (not shorted) → the load is "let go" → +B and HV rise (tube stress) | Recap; measure +B before reconnecting the tube |
| Flicker / unstable image | dried electrolytics (recap) or the PSU (Polo) | Recap; if it persists → PSU diagnosis |
| No picture / no HV | HOT, flyback, supply | Check HOT / flyback / +B |
| Intermittent dropouts | cold solder joints | Reflow |
| Blur | flyback focus pot | Adjust / replace the flyback |
Repair (method)¶
- HV discharge → CRT safety.
- Recap (method) — ⚠️ many chassis revisions: read the values off your own board (vendor kits vary). Depending on revision, white polypropylene vs blue-box caps; some chassis have a fan over these parts.
- Polo: if a recap doesn't fix the flicker → suspect the power supply (PSU) (a documented fault).
- HOT / flyback, focus / geometry adjustments.
Cap kits & parts¶
- Paradise Arcade — Hantarex Polo kit (Zanen) · Console5 — Polo 25/28 · or a manual read-off + Mouser / TME / Digikey (recommended given the revisions).
See also¶
- CRT safety · Recap · Wells-Gardner (US monitor) · Nanao MS8 / MS9 (Sega candy).
Sources & attribution¶
- Arcade-Projects / Arcade-Museum / ukVac — MTC-9000 & Polo repair logs (open-cap overvoltage, Polo PSU) — https://www.arcade-projects.com/
- Paradise Arcade / Console5 — Hantarex Polo cap kits (BOM cross-check) — https://console5.com/store/hantarex-polo-arcade-monitor-cap-kit.html
- Hantarex — service manuals (MTC-9000 / Polo) — to reference
Review & corrections
How this space is used
Spotted a wrong value, an outdated procedure, a chip reference that does not match your board? Say so here, with what you observed (model, board revision, serial number, measurement). Every report is cross-checked against a source before anything changes — an unverifiable correction is published as “reported by …, not cross-checked” rather than silently applied.
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