I am working on a Williams Tri Zone. I have recapped the powers supply and seem to be getting correct power. I added a nvram and changed the badly corroded 40 pin. Display glow but do not work. When i push the diagnostic i get 2 solid lights that dont go out. This seems to indicate a bad 5101 but its not booting to audit and the nvram is new. These games do not have the onboard diagnostic of the bally stern stuff im use to. Thanks for any help.