Famicom Power Adapter Board


Famicom Power Adapter Board


In stock


SKU: FAMI_PWR_BRD_B2 Category: Tags: ,



  1. This adapter supports Nintendo Famicom consoles (a.k.a. original Famicom ‘ファミコン‘). We only test OG Famicom consoles from Nintendo. but it should be ok to work with its variants and clones.
  2. Offers customizable video output options such as composite video or in RGBS pass through via NESRGB etcs.
  3. Mini DIN9 plug can be linked with both composite & RGBS from NESRGB etc, TRSS output composite video. TRSS is on a daughter board, it be easily soldered if you have no Mini DIN9 installed.
  4. You can use this Power Adapter board to convert the video signal from Famicom mother board to correct starand compiste video. However, we would suggest you to use our tiny “Famicom Compoisite Adapter” if you want to get a better quality composite video,
  5. Ouput 3D surround sound and mixes in the audio properly, you can turn the 3D surround sound off to set it  back to general sterero.
  6. All capacitors are from Rubycon Corporation (ルビコン株式会社)
  7. An optional USB PD daughter board allow you using USB PD power adapter to power on your Famicom console.


For anyone interested in this adaptor, please make sure you have the ability and suitable equipment to solder part of the product to the right position.

This product is with 1-year warranty. Misuses of any kind such as careless soldering and modifying or firmware update failure are not covered by warranty. Retro Game Restore will provide tech support for the products which are still warranty effective free of charge. The users should only bear the shipping costs. For the products which are no longer warranty effective, please kindly contact us via Facebook message or Twitter for details of tech support and fees.

Package included:

  1. Famicom Power Adapter Main Board.
  2. MINI Din9 female connector, same Pinout as Genesis 2.
  3. 7pin cable for Video, Audio and Power connection to Famicom main board.
  4. 2pin cable for Power switch.
  5. TRRS 4pin 3.5mm Audio Jack board for simple Composition Video and Audio L and R and GND connector.
  6. Heat sink.


Optional USB PD Type-C Power Plug daughter board

An optional USB PD (USB Power Delievry) daughter board allow you using USB PD power adapter to power on your Famicom console. You can purchase it as an optional product right in current product page. ( https://retrogamerestore.com/store/famipoweradapterusbpd/ )

PS. Please make sure your USB charger is USB PD compatible, you need to make sure your USB charger can output 9V voltage, otherwise there wont be enough voltage and current to power up your Famicom.

Famicom Compoisite Adapter

To get the best quality Composite video from your Famicom console. As the curcit path is super short and it would get rid most noise from main board itself. You can just place this adapter under the PPU of Famicom, just remove the 2SA-937 from OG Famicom Board, and solder three pins (Video, VCC, GND) and one wire from video output point. That’s all. ( https://retrogamerestore.com/store/famicompositedapter/ )

Simple Instruction



If you solder the TRSS connector as below,

Please use the right TRSS cable as below (Same as Raspberry Pi and Apple)

Please be reminded the included postage here is only for standardized airmail parcel. Should you choose other logistic services, such as EMS, to have your parcel dispatched, the additional costs will be borne by the customers.

Please also be kindly noted that due to the nature of air freight, parcels are measured by volumetric weight. It means the bigger/heavier the parcel is, the higher is the postage. In this case, should you choose to combine two items to be dispatched together, there will be extra costs for the postage. If you need more information, please send us DM. Thank you for the cooperation.


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Author: rgrdev

Retro Game fan, software programmer, electronic hardware designer and 120% Maker. Love to make something for fun.