Williams Space Odyssey
After you light the A-B-C feature below the swinging target, the red "Special" light comes on in the left outlane.
Something is supposed to make it switch to the right lane and switch back, but it stays on the left.
Also, the match stepper does not advance.
After fumbling through the schematic I found a Change relay and a Number alternating switch involved.
I found the Change relay, cleaned all switches, it looks OK, but where is the no. alt. switch?
Maybe in the number match relay?

Also, I just worked on the flippers, new coil stops, plungers, springs, sleeves.
One flipper "flutters" on the initial stroke.

Help!

OK, remember you a dealing with a pinball dummy.
Which cam is #5 and should the switch be closed or open when the cam is on the low section?

Williams score motor (resized).JPG

The circuit on this switch is fine, the coil is not energizing/releasing to move the switch.
Does that make sense?
What controls the coil is what we're after.

OK, so far I checked the switch on the score motor, it does energize the match unit coil but the match unit does not advance.
Hard to see why, I will need to investigate.
Is the switch on the match unit the one in the schematic?
That one appears to control the change relay to switch outhole special lights.

Williams schematic alt (resized).JPG

Williams score motor (resized).JPG

Williams switch (resized).JPG

Good job Argo!
Mine is missing, I'll check all the usual places for a replacement.
So that switch must also control the change relay which explains why my L-R outlane "special" lights do not switch.

Thanks, Ron

I found one, here's who has it!

https://flippers.com/catalog_oc/index.php?route=product/product&product_id=2208&search=ratchet&description=true

Flippers.com

Thanks everyone!

Ok, I replaced this ratchet assy.
Now my match unit advances whenever I hit a rebound bumper, we are good there.
The match unit also moves a switch on a separate cam, should that switch trip the coil on the Change Relay?

Still, after I light the A B C, my red outlane special light stays stuck on the left side only.
I realize the Change Relay has a make/break switch that moves the light to the right side.
What on the playfield trips the coil on the Change Relay to move the M/B switch?

ratchet (resized).jpg

The match unit "wheel" moves as it should and moves the alternating switch as it should.
I adjusted and tested the Alt. switch with an ohmmeter, but when it closes nothing happens at the change relay.
I noticed when I start a game the change relay coil is energized, don't know if this is supposed to happen.
During gameplay, after you light ABC and go in any one of the 4 kick-out hole (green arrows) the change relay should switch, this is not happening.

Space Odyssey arrows (resized).jpg

Space Odyssey schematic.pdf

Ok, with help from Barry.

When I got the game, the pivot that turns the match wheel (which also clicks the alternating switch) was missing.
After I replaced it, no change.
Turns out, someone along the way soldered a wire between the "C' relay coil and the "Change relay" coil.
Eliminated the wire, game works!

Thanks guys!