I have just purcased a bobby orr powerplay pinball. My problem is when i start the game it goes through its start-up routine (7 flashes and tune) and I can start a game. But some of the playfield solenoids will not fire. Namely the two target resets, the ball out and the middle and left hand thumper bumpers. I have run it through the test mode, All lamps are fine, all switches activate and register when closed, all displays count through their sequence, but when running through the solenoid test the coils mentioned do not fire and other coils fire in their place. I have earthed the transistor tabs on the solenoid driver board and all solenoids activate individually as their supposed to.
Does anyone have any ideas on what could be causing this ?

Have checked for blown fuses and also the diodes on each switch on the playfield. The wiring to the solenoids seem o.k. other than pulling the harness apart and checking.
In solenoid test mode here is the sequence that is activating
1Top hole saucer,2 knocker(o.k), 3 top hole saucer(o.k), 4 chime 10, 5 chime 100, 6 chime 1000, 7 chime special, 8 knocker, 9 right thumper bumper, 10 right thumper bumper(o.k), 11left slingshot, 12 right slingshot, 13 nothing ,14 left slingshot(o.k), 15 right slingshot(o.k), 16 up post(o.k), 17 coin door relay(o.k), 18 flipper relay(o.k).
As you can see some solenoids fire more than once and some not at all in test mode.
In gameplayt the outhole kicker will not activate,right bumper operates(o.k),left and right slingshots operate (o.k),outhole kicker operates (o.k),targets will not reset,left bumper activates right bumper, bottom bumper activates left slingshot, drop targets activate right slingshot and at the end of score tally after each ball right slingshot and tophole saucer activate.
Any ideas on this would be appreciated. The MPU, solenoid driver board and Power supply have just been re-furbished and were tested before installation. Also does anyone have a copy of the schematics I could get my hands on.
Many Thanks