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Firepower (Williams) MPU Combo ROM Kit 6pcs (SEE NOTES):

Price: $45.00 each

Status: Out of Stock
Part #: ROMS659
Condition: New
6-piece kit for replacing obsolete PROM chips IC21, IC22, and IC26 on factory-original L6 or L6A MPU board for Williams Firepower pinball.

The new IC14 ROM chip in this kit replaces your original IC14 chip, as well as PROM chips IC21, IC22, and IC26. These 4 old chips are removed from the board, and the 1 new IC14 chip is installed, along with installation of 2 additional parts, and making some jumper wire connections.

Kit includes the following parts:
  • IC14 Combo ROM chip
  • Custom-modified 16-pin chip socket
  • 7408 AND gate chip
  • 3 jumper wires
  • Installation instructions
This kit requires the following (not included with kit):NOTES:
  1. This kit requires expert level skill/experience with electronic component handling, removal, and installation.
  2. DO NOT PURCHASE THIS KIT if you are uncomfortable working at a component level with electronics and soldering, or do not have someone with qualified experience who can help you. We do not provide technical support for this kit, so cannot help you with installation problems, questions, or troubleshooting. You are on your own after purchase.
  3. Please be sure you are comfortable with component-level electronic work before ordering (or have someone qualified who can do the work for you), as electronic parts are not returnable, and we do not provide support with these parts.
  4. Click here for more info on the combo ROM kit, and system requirements.
Additional images below show kit components installed on MPU board: IC14 Combo ROM with jumper wire connecting 1 pin to board, custom chip socket installed piggy-back on top of IC15 with 7408 chip installed in socket, and connecting jumper wires. Installation instructions included with kit.

Officially-released Williams software we supply is Genuine Williams Replacement Parts, supplied with permission of Planetary Pinball Supply Inc, and includes a $2 non-refundable charge covering Williams Electronics Games licensing and processing fees. Official terms of software use and licensing can be reviewed here. Purchase and use of official Williams software that we provide indicates your acceptance of, and compliance with, the terms in the Williams Software License.

This software is provided as a service, but is not being sold. Price reflects the cost of the service to provide the manufacturer-owned software on game-compatible media, and installation instructions for the software that comes on the media. We do not sell or own any manufacturer software.

Additional Images:
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NOTE: No returns on ROM & Software Updates - all sales final.

  • Ask a question about this item

    Fits The Following Games: (The list below may not be complete, and it's accuracy is not guaranteed. Contact us if you have any questions.)
    WILLIAMS: Firepower
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