I recently acquired a bally nip-it in great condition from a fellow pinsider. I'm trying to fix a couple of issues and clean it up before i gift it to my father.

There are only a couple of issues that I noticed.

1. the open gate relay doesn't fire when i hit the gate target relay is activated
the score is correctly set
the light is on
when i hit the target the relay fires
the contactors meet
I have continuity in the line to the open gate relay
I noticed the hot side of the switch that leads to the open gate relay only reads 36V AC
if i jump the wire directly from that switch it doesn't activate
if i jump it from another switch on the relay it does, the other 2 switches are reading 55V AC
I don't have a #455 bulb yet to put into the delay socket

2. the player up stepper doesn't reset all the way when playing with 4 players
I cleaned it, but maybe it needs lube? do i put the teflon lube on the pads to reduce friction?

3. sometimes ballout doesn't progress to next player/ball
I haven't done a deep test on this but i'm scoring points, yet sometimes i've gotten up to 5 balls in a row before it progressed

4. the left lane kickback is pretty weak

5. there is a small flake from where a bulb melted a spot on the backglass, whats the best way to cover that up, i'm lucky and it was in a black paint section

Thanks!
Looking forward to getting this up and running for a xmas surprise.

Score motor 5F is reading 55V
I assume it's the top switch but measured the bottom also.

I noticed one of the 00-90 unit fingers is not spaced 10 apart. Is this an error?

IMG_20181220_191558 (resized).jpg

So if I'm reading this right the top switch on cam 5 should be closed?

IMG_20181220_192319 (resized).jpg

The gate target relay does energize. I traced one of the contact wires (RED/Black) to from the gate target relay to the open gate relay. Thats the one that is 36V AC instead of 55V AC like everything else seems to be

IMG_20181220_201554 (resized).jpg

I've also done a 9V battery test on the Open Gate relay and it fired.
Also if i jump another switch that is 55V on the gate target relay to the open gate relay it seems to work

Just not sure why its reading 36V on that brown wire and how to address that

The one blade that was off, was definitely hitting the wrong pin as noted. I was have to bend it back. I also thoroughly cleaned all the contacts on that stepper motor as i wasn't getting continuity. the dirty pads were causing the gate target light to stop being lit, but have done nothing for the open gate relay.

I will check the jones plugs

The 00 90 disc is telling it to light the bulb though so if the bulb is in we should be good? Or is there a 50V line on the disc also?

Got my hands on a #455 bulb. The open gate relay started working with that delay bulb inserted.