(Topic ID: 207553)

Gottlieb Sys1: Replace dead small transformer with LED displays & power supply


By ForceFlow

2 years ago



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  • 14 posts
  • 6 Pinsiders participating
  • Latest reply 1 year ago by northvibe
  • Topic is favorited by 9 Pinsiders

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#11 2 years ago

hello everyone

my PI-1 board uses +5V only.

my all-in-one PI-1 X4 board uses 11VAC and 14VAC taps from the small transformer, but not the 69VAC.
therefore it could still run on a damaged transformer whose 69VAC tap often blows due to reverse insertion of A2P1 connector on the original GTB power supply..

in addition to this, my all-in-one PI-1 X4 board generates enough current on the 12VDC output available at the screw-clamp connector J1, so that it can directly power Boston Pinball's excellent displays without need for an additional power supply block.

see the attached picture: direct power to the displays or to the dimmer provided with each displays kit.

Connect_PI1X4_eng_s (resized).jpg

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