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Title: Adding LED's to Gottlieb System 80 boards Post by: Ken Layton on October 17, 2011, 02:36:42 PM I have done a nice writeup complete with pictures on how to add power indicating LED's to the Gottlieb System 80 pinball machine boards. These boards never had any indicating LED's originally.
I installed LED's on the CPU board, driver board, auxilliary lamp driver board, and the sound/speech power supply board. The writeup is at this link: http://forums.arcade-museum.com/showthread.php?t=202496 (http://forums.arcade-museum.com/showthread.php?t=202496) This picture shows the modified boards installed in a Gottlieb "Haunted House" pinball machine. The LED's I installed are circled. Title: Re: Adding LED's to Gottlieb System 80 boards Post by: stayouttadabunker on October 17, 2011, 03:48:54 PM Nice job with that Ken!
It looks very, very functional! :89- Title: Re: Adding LED's to Gottlieb System 80 boards Post by: Ken Layton on October 17, 2011, 05:26:45 PM The sound/speech power supply board really needed these LED's. There are four different voltages involved with the sound/speech power supply: +12v, -12v, and +30v going out to the actual sound/speech board and +24v coming into this power supply board.
Absolutely none of the System 80 boards were ever really designed for troubleshooting and do not have any test points. Having the LED's there makes it easy to tell at a glance if power is there. This is particularly helpful on the Sound/Speech power supply board. I've also done a writeup with pictures on installing LED's and using a TIP 102 transistor on the Gottlieb pop bumper driver boards: http://forums.arcade-museum.com/showthread.php?t=197641 (http://forums.arcade-museum.com/showthread.php?t=197641) Title: Re: Adding LED's to Gottlieb System 80 boards Post by: Ken Layton on December 29, 2012, 03:48:12 PM I just did a guide to adding a +60 volts DC power indicating LED to the Gottlieb System 80 and System 80A power supply boards. It's now posted on pinwiki:
http://www.pinwiki.com/wiki/index.php?title=Gottlieb_System_80#System_80.2F80A_Power_Supply_Board_LED (http://www.pinwiki.com/wiki/index.php?title=Gottlieb_System_80#System_80.2F80A_Power_Supply_Board_LED) |