From: nospam@acme.com   
      
   Thanks for your replies!   
      
   To say the truth, i am not really new to this group, but that's been   
   more than 30 years ago.   
      
   Over the time, i owned 67 pinball games, all of them but the first one,   
   a Gottlieb's "Super Soccer" had failures. I've searched the "Super   
   Soccer" about a zillion to find the bad zero switch at the drum units. I   
   was 15 at this time, now i'm 62 years old.   
      
   I repaired more than 100 machines, EM and SS as well.   
      
   But games build by Playmatic are special: they use CMOS instead of TTL   
   logic.   
      
   I bought a Big Town in 1987. The price was cheap, 70 DM (around 35$).   
   Both RAMs, both ROMs, and the CPU were dead.   
      
   And other chips on the MPU were dead. I was able to get another machine   
   month later. It had good ROMs. This game was cheaper, 50 DM (around   
   25$). I build a small circuit, using just 8 IS to do the job of the 1834   
   ROMs.   
      
   The ROMs were replaced by an EPROM 2716. The game went in attract mode   
   at once. Both games had a bad 74C42 on the decoder.   
      
   Due to my job, i know most assembly languages of former machines. The   
   knowledge about these, i've made a "diagnostic board" for the   
   Playmatics, which was very helpful to find errors in the MPU of the games.   
      
   Now I have 2 bad "Big Town". Both are faulty.   
      
   1) Does not recognize contacts other than the coins, the credit, the   
   ball resting, reset, and the test buttons.   
      
   2) Shows irretating scores. "20" is the high score to date, new games   
   start with 200.020 points.   
      
   That's it.   
      
   Kind regards,   
   Jan   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)