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(Topic ID: 43387)

Looking for information on Gottlieb System 80A

By meSz

11 years ago



Topic Stats

  • 4 posts
  • 3 Pinsiders participating
  • Latest reply 11 years ago by blownfuse
  • Topic is favorited by 1 Pinsider

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#1 11 years ago
OP
 
MEZ

meSz

Pinside member

12y 102K 7,426 1

Fix up a Gottlieb Super Orbit but I am more of a Bally person so my knowledge with Gottlieb is limited. Doesn't help that there is no manual with the machine either. In looking at the attached picture you can see someone hacked the IC Socket. This socket is at the top of the CPU board and just below the Reset Board. If I am correct in my thinking this IC Socket is not used???

When I play the game everything scores as is should but the displays show garbage. If I turn the game off and back on the Displays will reflect all zeros, with the exception of players 1 and 3 the last digit reflects nothing. So it appears that the game is not keeping its memory and there is also an issue with the information being sent to the displays. I have checked the connectors and pins to the displays to no avail.

Appreciate any insight into the above issues! Thanks meSz

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#2 11 years ago
 
SPC

blownfuse

In Memoriam

US Climate Controlled Sfba, CA

12y 69,550 2,986 70

That socket is used for the reset board above it. Also, if you get one of Great Plain Electronics Quickscan testers, it uses this socket for diagnostics.

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#3 11 years ago
 
RJP

Patofnaud

Pinside member

US Tilton, NH

11y 67,150 3,621 7

+1 to that being a diag socket.

You probably have just a bad battery and maybe a connection issue for the displays (top right output connector on MPU).

If you have the old black DataSentry battery, get rid of it asap. It's probably close to 30 years old and if it hasn't started leaking it will.

Wealth of information here..

http://www.pinwiki.com/wiki/index.php?title=Gottlieb_System_80#Relocating_the_battery_from_the_MPU_board

And that whole Wiki.

Once you get your battery/display issues cleared up.

Swap the orange cap
Do the ground mods
And the leds while doing the mods

You will have a much more solid System 80.

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#4 11 years ago
 
SPC

blownfuse

In Memoriam

US Climate Controlled Sfba, CA

12y 69,550 2,986 70

You forgot to have him perform test 20 to do a quick check of the 5101 RAM.

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