Indiana jones demons **help**

RLEVIN

Permanently Banned. Buyer Beware. Questionable bus
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Received the game with a mix of electronics - A Two-Bit WPC board, a
Rotten Dog solenoid driver and the rest, of course, Williams. Came in
D.O.A. because of a display driver blow-out, and a replacement for it
was found and installed after which the game then "booted up".
Somewhat.


No 20V line and a blown C11 on the SDB, so the cap was replaced and
immediately blown out again. Checking the schematics in order to
diagnose the circuit and components lead to the discovery that Rotten
Dog must not be able to read a schematic themselves as they had laid
out connector J106 totally backwards. The 20V line was being tied down
to the 50V solenoid supply. Repinned the connector to match the board
and the 20V line started holding again.


Now the game comes up in an inconsistent state. If it comes up
scrambled, unplugging the display driver allows the game to run, but
obviously has no display. If it comes up with an ear-busting howl and
half a display, disconnecting the sound board does the trick. If it
doesn't boot at all, disconnecting the ribbon cable between WPC and
SDB allows it to boot, but it won't operate.


And when you can start a game, the upper and lower playfields take
turns working, and the General Illumination never comes on.


This game has almost a complete set of known, working boards
throughout, each tested individually on a bench and in another game.
Yet when they come together in the Indiana Jones cabinet they all
decide to throw their own parties. Anyone know of any compatability
issues with Two-Bits WPCs or Rotten Dog solenoid driver boards that
might point in a proper direction?...


250.00 Paypaled to the one that answers it.
 
first i'd try a new display
sounds like it could be the original problem
DMD controller is my second guess

reading your words the game plays with the display unplugged

then id go to the schematic and see where sending the wrong voltage into connector went to. could be an obvious burnt component along the route or at least an obvious component to test

there are some other threads with rottendog power supplies (gottlieb sys 1 pins) not working correctly with the Ni-Wumpf CPU. something about the drop targets not resetting and possible a software update MIGHT fix it. i was thinking theres not enough electron flow to the driving transistor to fire the drop target solenoid but im just hypothecticalizing.

could be this is another rottendog issue that has reared its ugly head ?

think you should give up and sell me the game please. you have enough projects
:)
 
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first i'd try a new display
sounds like it could be the original problem
DMD controller is my second guess

reading your words the game plays with the display unplugged

then id go to the schematic and see where sending the wrong voltage into connector went to. could be an obvious burnt component along the route or at least an obvious component to test

there are some other threads with rottendog power supplies (gottlieb sys 1 pins) not working correctly with the Ni-Wumpf CPU. something about the drop targets not resetting and possible a software update MIGHT fix it. i was thinking theres not enough electron flow to the driving transistor to fire the drop target solenoid but im just hypothecticalizing.

could be this is another rottendog issue that has reared its ugly head ?

think you should give up and sell me the game please. you have enough projects
:)

We have tried a new display and it is good it has to be sonething simple we are missing
 
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