I can't begin to tell you how many articles,posts etc i have read in regards to the blanking signal on Williams pinball circuitry. #$#

I have basically replaced every IC,tranistor, the 555 timer and the 40 pin connector in the line of the blanking signal.

This is where i hit the brick wall !  

The only advancement made after all the replaced components was upon power up i get random sounds. ( Original BK sounds )

Once powered up the only access i have to the entire game is the sound board test button... If i press that i get the sound test as it should be....Nothing else !

BTW thanks to everyone who has chimed in so far, i appreciate it.