turbo help

arcadegamer

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Just picked up a Turbo for a friend along with several extra boards.Monitor lights up-good raster ect -controls all seem to work. One board just makes noise of engine rumbling - no coin up difference game play nothing .Another board lights up the high scores and seems to play blind - hear engine revs-score works-steering and acc.seem to work by the sounds made when moving them . Third board does same thing but does not display high scores - just current gameplay score . Voltage has been adj to 5.10 and the board connectors cleaned . Have not reseated any game board chips . One led light is always on - one goes on-off with game play third one stays lite all the time. QUESTION is : why no video if all connections are present and correct and the monitor is functioning while swapping out 3 different boards ? Thanks for reading and any input . mike
 
I had alot of luck removing and re-seating the ribbon cables. Some times swapping them with another board set all together. I bought 2 non-working board sets and I managed to get 3 boards sets working just by doing that. Or maybe you will see more things come to life? I am sure other people on here will have better advise. I am just passing this on. The video cable if I remember correctly comes from behind and makes a pretty sharp turn to the board. There are alot of connectors on this board set and could easily be over looked. Again I am not trying to step on toes, just passing on personal exprience.
 
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