WTB: Williams System 7 CPU Pcb

RILaw

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I'm about giving up on my Black Knight Sys 7 CPU pcb (Mine is locked up (Replaced Mem prot circuit, new roms, 40pin interconnect, 5101, etc), anyone have a working one FS?

Let me know...
 
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Did you power the board up without the driver board connected?I had a driver board that when connected would cause the cpu board not to work,tried a good driver board on it and worked fine.
 
Did you power the board up without the driver board connected?I had a driver board that when connected would cause the cpu board not to work,tried a good driver board on it and worked fine.

Yea, Thanks, but I just have solid led's and segment "0", no flash for boot. Locked with and without driver pcb.
 
Get a Leon test ROM burned and use it to diagnose the board, not very many parts on that thing and one bad PIA or anything in between them can lock it up.
 
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