All fixed now once replaced components but think it was the installation job on the last job that was the problem. Game started with the odd reset, then guaranteed reset when you hit both flippers hard, then eventually just hitting one flipper caused it. I think one or more of these blobs of solder separated from the pcb. When removing the old br it still has a couple of solder blobs on the legs.  I wish I tested continuity before replacing components. I do have real difficulty laying solder on the topside/component side of the pcb, it didn't seem to want to stick