The 5101 RAM was used in most of the early solid state pinball systems to store adjustments and high scores. Including Bally -17, Bally -35, Stern MPU100, Stern MPU200, Williams system 3-7 and more. The battery in your game is powering this RAM to retain the settings and scores. The 5101 RAM adapter from PinForge.com replaces the original 5101 RAM with Ramtron F-RAM eliminating the need for batteries to retain adjustments and high scores. All 5101 RAM adapters are tested in a Bally -35 MPU prior to shipping.
Warranty provided by PinForge.
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