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Big Guns Pinball – Rom Upgrade

Name: Big Guns Pinball - Rom Upgrade
SKU: 1251
Availability: InStock

$35.99 – $71.99

These are the chips needed to upgrade your pinball machine to the latest version, play a different version, or replace missing/damaged roms.
Bally Williams Part #’s:
CPU ROM U26 L8 A-5343-557-1
CPU ROM U27 L8 A-5343-557-2
SOUND ROM U4 L1 A-5343-557-5
SPEECH ROM U19 L1 A-5343-557-6
SPEECH ROM U21 L1 A-5343-557-4
SPEECH ROM U22 L1 A-5343-557-3

System 11 Roms

Clear

Brand: Williams Pinball SKU: N/A

Categories: Bally / Williams, Pinball Roms, System 11

Tags: big, big guns, guns

Insert Coin Retro Arcade Bumper Sticker Window Vinyl Decal 5 inch (KRIS-RETRO-STICKERS-283)

Amazon.com Price: $6.99 (as of 09/27/2022 09:50 PST- Details)
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
Arcade Games - AC Power Connector - Male Flange

Amazon.com Price: $11.99 (as of 09/27/2022 09:50 PST- Details)
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
Game Room Guys Arcade Pinball Cable Clamps - 3/8"- Set of 5

Amazon.com Price: $9.48 (as of 09/27/2022 09:50 PST- Details)
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
Game Room Guys Snap Switch w/Straight Actuator - 3" Blade

Amazon.com Price: $10.48 (as of 09/27/2022 09:50 PST- Details)
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
Game Room Guys Pinball Switch Adjusting Tool

Amazon.com Price: $19.99 (as of 09/27/2022 09:50 PST- Details)
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
Williams Plunger and Link - 04/69-12/79- Set of 2

Amazon.com Price: $18.98 (as of 09/27/2022 09:50 PST- Details)
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.

L-A version notes / tune up guide is available from ipdb.com.

Revision History: (Not available/known for these versions at the time of listing)
Game Version L-8

U26 : Checksum: 9256
U27 : Checksum: 03D0

Sound Revision History: (Included for reference)
Sound Version L-1

U4 : Checksum: 84B0

Speech Version L-1

U19 : Checksum: 1DAF
U21 : Checksum: 4D54
U22 : Checksum: 844C

Weight	.25 lbs
System 11 Roms	CPU Rom Set vL-8 [U26, U27], CPU Rom Set vL-7 [U26, U27], CPU Rom Set vL-A [U26, U27], CPU Rom Set vP-1 [U26, U27], Sound/Speech Rom Set [U4,U19,U21,U22]