Main product image for NEC PC-FX 12V DC Power Supply/PSU Tetsu No Onna
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Drop-in PSU replacement for NEC PC-FX for the 220-240V world! (100-120V world too :))
Gaming
Power management
Power

If you’re operating in a 220–240V region and own a Japanese NEC PC-FX, you already know the limitation: the console was designed exclusively for Japan’s 100V AC mains. Using an external step-down transformer is mandatory—and often inconvenient, bulky, and not ideal for long-term reliability.

Tetsu no Onna is a purpose-built internal power conversion kit that eliminates the need for a step-down transformer entirely.

Overview

This kit replaces the original Japanese PSU with a modern DC-input power board. It accepts a standard 12V DC supply via a 5.5mm OD / 2.5mm ID barrel connector, providing clean and regulated power directly to the console.

  • Fully compatible with Type-A and Type-B PC-FX
  • True drop-in replacement
  • No case modification required
  • Designed for clean integration and long-term reliability

Installation

  • Requires basic DIY skills
  • Phillips screwdriver
  • Torx T10 screwdriver

A guided installation tutorial is included.

What’s Included

  • Custom power regulation board
  • Barrel jack pre-installed in a precision 3D-printed snap-fit rear shell
  • Genuine JST connectors

The rear barrel connector assembly is engineered to snap neatly into the original back panel opening—no drilling, no cutting.

Key Features

  • Reverse polarity protection
  • Overvoltage protection (cutoff at ~13.8V)
  • LED indicators:
    • Power good
    • 9V rail status
    • 5V rail status
  • High-quality genuine JST sockets
  • Drop-in compatibility with both PC-FX revisions

Power Requirements

You will need a suitable external DC adapter:

  • Output: 12V DC
  • Current: ≥ 2.5A recommended
  • Connector size(option 1):
    • Inner Diameter: 2.5mm
    • Outer Diameter: 5.5mm
  • Connector size (option 2):
    • Inner Diameter: 2.1mm
    • Outer Diameter: 5.5mm

Use a regulated, high-quality adapter for optimal stability.

This kit provides a clean, transformer-free solution for safely operating your PC-FX outside Japan—without altering the console’s chassis or originality.

Links to code and documentation

Documentation (github.com)

Product HS Code: 8534000085

Shipping policy

All orders ship from Wellington, New Zealand by NZ Post International Economy Tracked, usually within 2 business days of your order (excluding weekends and NZ public holidays). You'll receive tracking details by email once your order is on its way.

All items, regardless of size, are sent as a tracked parcel to meet customs requirements. There is no extra shipping charge for multiple items in the same order.

Please read the section for your country below. Import rules changed significantly in 2026, and for most destinations outside New Zealand you should expect to pay import charges when your parcel is delivered. ──────────────────────────────────────────────────────────────

🇺🇸 UNITED STATES

Typically 6–13 working days in transit, plus customs clearance.

✅ Nothing to pay on arrival. The price you pay at checkout is the final price.

Due to NZ Post restrictions, US orders have to be sent through their Small Business Sending service, which charges us the US import tariff plus a processing fee before the parcel leaves New Zealand. That cost is passed on to you at checkout: a 12.8% tariff line on the value of your order, plus roughly NZD $5 added to the US shipping rate. In return your parcel arrives duty-paid, with nothing to pay at the door and no customs delay.

If anyone does ask you for money on delivery, please don't pay it — contact us first and we'll sort it out.

Orders above USD $2,500 cannot be sent duty-paid. Please message us before ordering if that applies to you.

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🇪🇺 EUROPEAN UNION

Typically 6–13 working days in transit, plus customs clearance time.

⚠️ You will be asked to pay import charges when your parcel is delivered.

Since 1 July 2026 the EU has removed the old €150 duty-free threshold. VAT and customs duty now apply to every parcel entering the EU, whatever its value. Nothing is prepaid at checkout, so the full amount is collected from you on delivery.

Why we can't prepay it for you:

NZ Post's business shipping services are the only ones that can carry a prepaid-VAT (IOSS) registration or a duty-paid (DDP) arrangement through to customs. Those services don't currently reach every EU country — Germany and Austria are both unavailable on them right now. The standard service we use does reach every EU country, but it has no way to tell customs that VAT has already been paid.

We've chosen the option that reaches everyone. Your shipping cost is the same or slightly lower as a result, and nothing is hidden from you — but it does mean VAT and duty are collected at your door instead of at our checkout.

What you'll pay:

• VAT at your own country's rate, on the value of the goods.

• Customs duty of €3 per unique product type. This is charged per distinct item, not per unit — five of the same board is one charge of €3; three different products is €9. In France the charge is €2 instead of €3.

• In some countries, a postal or customs handling fee on top. These are set by your national postal service, not by us, and we receive none of it. Approximate figures:

  Belgium         €21.50 (orders up to €150)
  Denmark         180 DKK
  Luxembourg      €18 (orders €22–150)
  Czechia         €14 customs declaration fee
  Netherlands     €10
  Portugal        €7
  Cyprus          €3.50
  Greece          €2.50–€15 depending on order value
  Slovakia        €3.20–€28 depending on order type and value
  Croatia         €2.46
  Romania         25 RON logistics fee
  Malta           Malta Post customs fees apply
  Slovenia        Varies by order type and value
  France, Germany, Ireland, Italy, Spain, Poland and others — no handling fee listed

These are indicative and can change without notice. If your country isn't listed, or you want a firm figure before ordering, please check with your national customs or postal service — they're the only ones who can give you an exact number. We're happy to tell you exactly what will be declared on your parcel so you can ask them.

If you are ordering several different products, note that each distinct product adds €3 of duty. Ordering multiples of the same product does not.

Parcels to Italy may take longer than usual while the new EU customs rules bed in.

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🇬🇧 UNITED KINGDOM

No VAT is collected at checkout for UK orders. Retrology Repair is not UK VAT-registered. Typically 6–13 working days.

⚠️ Please keep your order under approximately £135 excluding shipping, to stay below the UK low-value consignment threshold. Orders above £135 will be assessed by HMRC for VAT at 20% plus possible customs duty, and the carrier will add a handling fee. If you need a larger quantity, please split it across separate orders or message us first.

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🇦🇺 AUSTRALIA

Orders under AUD $1,000 enter Australia free of GST and duty. Nothing to pay on delivery. Typically 3–6 working days.

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🇳🇿 NEW ZEALAND

Prices include 15% GST. Retrology Repair is GST-registered and a tax invoice is provided with your order. Nothing to pay on delivery. Typically 2–4 working days.

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🇨🇦 CANADA

Typically 6–13 working days.

⚠️ You may be charged 5% GST plus a brokerage or handling fee on delivery. These are set by the Canada Border Services Agency and the carrier, and are outside our control.

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🌏 EVERYWHERE ELSE

We ship to most countries. Typically 6–13 working days, longer where customs processing is slow.

⚠️ You may be charged import duty, VAT/GST, or a customs handling fee on delivery. These are set by your own country's authorities, we receive none of it, and we cannot tell you in advance what it will be. If you need to know before ordering, please contact your national customs or postal service for a figure — or message us and we'll tell you exactly what will be declared on your parcel so you can ask them.

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WHAT WE DECLARE

Every parcel is declared honestly and in full: the goods description, the price you actually paid, the tariff code and the country of origin. We do not under-declare parcels or mark commercial orders as gifts. This keeps your parcel moving and keeps us compliant, but it does mean import charges will be assessed correctly where they apply.

LOST, DELAYED OR DAMAGED PARCELS

International shipping can be slow and unpredictable. If your parcel hasn't arrived within a reasonable window, get in touch and we'll investigate with the carrier. For parcels declared lost, we'll send a replacement or refund, whichever you prefer, subject to stock.

If your item arrives damaged, contact us within 7 days of delivery with photos of the packaging and the item.

REFUSED PARCELS

If a parcel is returned to us because import charges were refused or went unpaid, we'll refund the order less the outbound and return shipping costs.

INCORRECT ADDRESSES

Please double-check your address at checkout. Re-shipping costs for parcels returned due to an incorrect address are the buyer's responsibility.

A NOTE ON POLICY CHANGES

International shipping and customs rules are changing rapidly through 2026. Everything above is correct as at 26 August 2026 and is subject to change without notice. If you have questions about shipping to your country, message us through Lectronz and we'll reply within 1–2 business days.

NEC PC-FX 12V DC Power Supply/PSU Tetsu No Onna

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$52.18

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Retrology Repair

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Wellington, New Zealand
7 orders since Apr 10, 2026
Selling stuffs designed and assembled by myself. Usually they are used to assist diagnose, revive old or broken electronics and game consoles. Have a look!