Ive searched the EM threads and found some ABC issue posts but not much associated with my issue.

Interesting issue, when any A-B or C target, A-B or C rollover switches are closed, the sequence reset coil fires and resets the bank. Essentially it's automatically resetting on every A,B or C switch on the playfield. Now if I manually activated each switch stack on the actual sequence bank, it doesn't reset the bank. It only rests if one of the playfield switches is activated. I do have a schematic. Ive inspected the sequence bank and can not identify anything particularly wrong so Im thinking it could be somewhere else? If I need to post a pic of the schematic I can. Looking forward to getting this game up and running, never played it and its looks like a great game! Thanks for your help in advance!

Mark, I do believe it does reset when I manually nudge it forward. I will inspect D4 tonight when I get back home.

Mark,

The D4 switch on the sequence bank is simply one switch. I verified the switch is gapped and put my probe on it when it was open and I am not getting a grounded signal. I assume the coil is OK and cooked but I did not ohm it out to see.

The reset bar has its own switch and I verified when that is open, it is not grounded. When the reset bar is in a 'waiting' state, the contacts are closed. I do wonder if this switch may be touching D4 somewhere underneath. It is long and curled up at the end of it.

Also, I did verify that when the score motor is nudged, the reset bar on the sequence bank does reset.

So it's possible that there is a connection between the score motor 4C switch and the reset bank? It appears on the diagram that the only way that happens is when the D4 armature is closed correct?

Mark,

Going on the thought that there is a short calling for the D4 armature to activate when the score motor turns, based on the schematic, I did the following......

- Disconnected wh-yel-br from the 1/2 amp slow blow fuse to the 4C switch on the score motor
- Disconnected the wh-or-blk form the other side of the 4C switch on the score motor to the D4 armature switch

I connected a jumper from the fuse to the score motor switch and another jumper from the other side of the switch to the D4 armature switch to remove any potential wire shorts. This did not work, the score motor still activates the armature.

Correct, the thought was there was a wire(s) that were shorting each other within the loom, possibly. I wanted to eliminate that section of wire leading up to the series of switches.

The armature switch is tied to the wh-or-blk wire and then it goes to the coil on the rest bank. I can take a pic in the morning. Theres not much to that side of the circuit, hence why I'm pulling out my hair. Im sure its something simple and I just cant see it.

FYI, when I probe the 4C motor switch in the open position, it reads as if its closed. Not sure why, it's a simple switch with no obvious ground to the naked eye. Unless theres something under the switch in the stack thats making the connection.

Ok that make sense. So in your mind you think the gremlin is still around the armature switch.