78H05ASC Voltage Regulator, 5 volt 5 amp

  • Model: 78H05ASC
  • Shipping Weight: 0.0287lbs
  • 4 Units in Stock

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$29.95

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Voltage Regulator for Williams WPC pinball games.   TO3 case, 5 volt, 5 amp.  The main cause of intermittent reset problems.  Also used on older Bally/Williams power supplies.  This fixes Intermittent reset problems in Twilight Zone, STNG and other over complicated pinballs made in the late 1990's.  If flapping both flipper buttons fast causes a reset, you may need this.  Check for loose diode on all flippers first.  This replaces the 3 amp LM323K.   Note: the 78H05 is no longer available as a new part.  These are New Old Stock.  There are many fakes on Ebay.  We test them in our shop before selling them.  The internal junctions are compared against a known good unit, with a Ring Tester on an oscilloscope.  You can also find these in old Bally/Stern MPU type pinball machines, in the Solenoid/Driver board heat sink.  The Bally stern games can operate on the LM323K, so swap them when you can.

Replaces - PN: E-00710  Bally MPU,  PN: 5250-12634-00  Williams/Bally WPC

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