Gottlieb Replacement LM379S Audio Amp IC With Heat Sink

This replaces the obsolete LM379S (U23) Audio Amp IC used on Gottlieb System 80 pinball sound boards and some Gottlieb video game sound boards. This is board A6 in pinball machines, sometimes noted as MA-309, MA-215 or GV-10x and stamped B-20887-ver). This is the IC that has the large heat sink on it and often fails due to heat as the heat sink can fall off. Later versions used a MA-483 daughtercard and this has been untested as a replacement. This is a Big Daddy original design, not a copy.

Used in the following pinball games:  Amazon Hunt (early production machines only), Black Hole (USA Domestic Version), Caveman, Devil's Dare (USA Domestic Version), Eclipse, Haunted House, Mars: God of War, Q*Bert's Quest, Rocky, Royal Flush Deluxe (early production machines only), Super Orbit, Volcano

Used in the following video games:  Krull, Mad Planets, Q*Bert, Q*Berts Cubes, Reactor