Ok, I have continuity from the 3 power wires from 3J3 (power driver) pin 7 to the playfield harness and pins 6 and 8 to the coin door lockout relays.  One of these looked absolutely shagged, i have read on the pinrepair site something about these.  I quickly disconnected the ground from these and powered up but it made no difference to the symptoms described above.  I guess i should bypass these and connect up the two power wires directly from each lockout coil?  I'm wondering if this also has something to do with the coin door menu switches not working?