hi, ended up putting some replacement parts in that area, ended up with a different xtal that rated at 32.768 Khz but scope is now givinig a strage sine wave are 1.5Mhz... The over message said it is not critical so i will leave it for now.
My Boot doesn't happen, if I remove all chips the Top and Bottom lights remain the same, regardless of Watchdog.
My next goal is to tackle the ASIC, if I remove that I get 3 lights on start-up.
The Asic has had small amount of corrosion, I haven't considered it a 'right off yet'. I ordered a different socket as I seen pins not gripping very well so thats my next move.
This ASIC, I seen it for sale by some pinball repair sites, I presume its programmed or custom made in some way?
I been studying around the processor, seeing what it needs, I have now got some activity on the data/address lines, so I made some progress