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1970's Atari PCBs - Le-Mans, Crash & Score, Stunt Cycle


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I've got the above mentioned Atari PCBs up on thievebay currently. While they're listed under a fee-free promo, would be happy with $50 a pop from AA members + post if anyone's keen.

 

They're all as-is, but I don't know if anyone on here has a thing for older Atari boards and the means to get them running properly.

 

Stunt Cycle: https://www.ebay.com.au/itm/113281384834

Le Mans: https://www.ebay.com.au/itm/113281385559

Crash & Score: https://www.ebay.com.au/itm/113281385786

 

If you're interested, hit me up and I'll nuke the auction(s).

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After a bit of prodding and poking I found the 1k resistor on the composite video final output stage (which had been added by an op was of too higher value for the TV I'm using.

A 5k pot was substituted and I was able to dial it in to get a good image up on screen.

Still need to wire up audio voltages +18v (+12v will be fine) and -5v and a 5k pot for the throttle but it credits up and there is activity (bike pops a wheelie).

 

kZ9mHf2.jpg

Edited by Kaizen
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After a bit of prodding and poling I found the the 1k resistor on the composite video final output stage (which had been added by an op was of too higher value for the TV I'm using.

A 5k pot was substituted and I was able to dial it in to get a good image up on screen.

Still need to wire up audio voltages +18v (+12v will be fine) and -5v and a 5k pot for the throttle but it credits up and there is activity (bike pops a wheelie).

 

Awesome!

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For most discrete logic boards I just use a PC power supply, just find the two power rails going to the 74xx logic IC's and wire the +5 and Gnd to them.

No need to source AC transformers and you don't need to remove the regulator components.

Stunt Cycle uses +18 (+12v ok) and -5v for the audio and accelerator signal so an arcade power supply was used.

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