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Replacement CPU IC for Bally Home Pinballs
Model: BallyHome-CPU2


A fully functional replacement for the original Bally Home Pinball CPU IC (40 pin) - (Mostek 3870). This is for the single 40 pin IC logic board (see picture) only at the moment. I have developed a working replacement for the 3 X 40 pin IC first version logic board - need to create an installation sheet as there are several modifications needed for the mother board.

This CPU IC replaces the original CPU IC on the following Series 2 Bally Home Pinball games:

  • 614-2000 Captain Fantastic
  • 614-4000 Galaxy Ranger
  • 614-5000 Fireball

Packed in anti-static bag.

No warranty against failure - you must verify all voltages prior to installing!
Use your voltmeter to check that you see the voltages across the two capacitors on the bottom right side of the logic board as shown on the second picture...test with the CPU not installed - nothing should energize with the CPU pulled, other problems exist if solenoids fire when the CPU is out:

  • We recommend that you first replace the two 22mfd capacitors and test again prior to ordering this CPU!
  • VLED should be around 6 to 7VDC
  • 5VDC should be 5.00VDC +/- 0.2VDC - this is the critical voltage.

The final picture shows a typical MPU board in self test - you should see "600d" on the display, then it should cycle all the numbers, lights and solenoids...

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This product was added to our catalog on 09/14/2013.
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01.Box of #47 bulbs
02.BLUE ESR Meter - KIT
03.Gottlieb Game or Sound PROM/EPROM/GALs
04.Guide Rings
05.Trifurcon pins 08-52-0113
06.Bally/Stern Replacement Rectifier Board
07.Box of #44 bulbs
09.Bally/Stern - Alltek Ultimate MPU
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