got my boards back from chris hibler and installed but for some reason f2 keeps blowing even with nothing plugged into power supply any help would be appreciated

yes and tested

he added ground mods

ok so i hooked up one of the rectifiers wrong fixed that.... now fuse doesnt blow and i have 12v and 5v volt led working but no power to play field

Got power to back glass wiggled conectors got som sounds and lights left flipper worked before f4 blew.... Radio shack in the morning

so i can wiggle a1-j4 and get some lights but it is random...... I've got some sounds when wiggled but also random... flippers flip via flipper buttons also random...... its weird cause i didn't start a game via start button lol ,pretty sure my next step would be to replace or repin connectors any suggestions?

and what i mean by random is that sometimes certain lights come on and sometimes its other lights that turn on.... sometimes certain sound other times different sound....sometimes the flippers work sometimes not slingshots sometimes