keithsarcade
Well-known member
FS: Tron PCB and Gorf PCB
Tron works, but sound goes out eventually. Sometimes it takes a few minutes, sometimes a few hours. Resetting the game will bring the sound back for a short time. Problem is somewhere in the SSIO. I replaced one known broken cap as well as the LM3900 to no avail. $125 shipped USA.
Gorf PCB, not working. I was able to diagnose this one by swapping boards with my Space Zap since they both use the card rack setup. The CPU at J3 is the main culprit. I can put my CPU from Space Zap in this set and it will work, but still wont produce any sound, even with 2 known working amps. So there are other problems, probably in J6. The 2 smaller RAM boards and the pattern board are working. $60 shipped USA.
Tron works, but sound goes out eventually. Sometimes it takes a few minutes, sometimes a few hours. Resetting the game will bring the sound back for a short time. Problem is somewhere in the SSIO. I replaced one known broken cap as well as the LM3900 to no avail. $125 shipped USA.
Gorf PCB, not working. I was able to diagnose this one by swapping boards with my Space Zap since they both use the card rack setup. The CPU at J3 is the main culprit. I can put my CPU from Space Zap in this set and it will work, but still wont produce any sound, even with 2 known working amps. So there are other problems, probably in J6. The 2 smaller RAM boards and the pattern board are working. $60 shipped USA.
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