There isn't a freeplay option in the Original roms.
You would to have other roms or add switches or set the high score level low (like 10.000 points).
I've used the Oliver Okaegi version 27 and it keeps the credits always on 1 (or higher).
http://www.pinball4you.ch/okaegi/pro_soft.html
This option is turned on via the dips 25 and 26 (max. credits set for 40) both on.
There are some more extra options too.

Peter
www.inkochnito.nl

I would think this is normal.
The ball just hits it with such a force that this is unavoidable.
If the rubber behind the drop target wasn't there, the drop target would simply break.

Peter
www.inkochnito.nl

I had this too once...
I fixed it by making sure the wire gate does not bounce when hit.
Sometimes because of this bouncing the ball slips under the wire.
Bend the wire holding the gate so it falls against the post insted of the small end of the wire from the gate.
Just be careful not to break the wire.

Please correct me if I'm wroung...
This light will act as a switch for the small driver board.
It draws some current on which the MOC 3011 (optocoupler) switches the big triac in the bottom of the transformer plate.
If you change it to a led it will NOT draw enough current and not switch on the GI.
So keep the normal light bulb if you want your GI blinking.

The other bulb does the same for the solenoid expander in a slightly other way.

GI_flasher (resized).jpg

Sol_exp (resized).jpg

I have a nice file for the yellow "line voltage" sticker/label that goes with the transformer.
http://www.pinballrebel.com/pinball/cards/Backbox_cards.htm