(Topic ID: 294666)

1974 Gottlieb Free Fall will not subtract drained ball

By hjh632

4 months ago


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  • 16 posts
  • 4 Pinsiders participating
  • Latest reply 4 months ago by Snowyetti
  • Topic is favorited by 1 Pinsider

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Capt Card Ball Subtract (resized).jpg

#1 4 months ago

It will subtract a ball for tilting. It will add a ball for hitting wows or 50,000 point thresh hold. (Solenoids work)

Upon drain it kicks the ball out to the shooter lane, passing over the switch under the apron which has been cleaned and gapped, but it stays on ball 5.

I've cleaned motor board and backbox Jones plugs twice (including the female portion with a .177 rifle brush.)

Brand new to me game, sat idle for quite a while, ordering schematics from PBR Monday. I know help may be limited until I can post schematic snippets. Any help? I know there's several Pinsiders with much more background and knowledge than I have.

#2 4 months ago

If it's like Capt. Card (shown below), it could be a switch on the V/1st Ball relay (in red).
Capt Card Ball Subtract (resized).jpg
/Mark

#3 4 months ago

I found a V relay in the backbox. I’ll check the switches making and breaking as I manually operate it. Thanks.

#4 4 months ago

Cleaned all three switches on the V relay, then pushed the drain switch and it subtracted one ball at a time. Good...But - Frustration - restarted the game and it stays on ball 5 again with the V relay locked on. I’ve been trying to figure out what was different the time it worked and am stumped.

#5 4 months ago

Restarted again. V relay no longer locks on but still not subtracting ball count

#6 4 months ago

On Capt. Card the V relay stays locked on until points are scored so if you drain without scoring the ball count won't change.

Have you verified that the schematic shown above matches your game?

#7 4 months ago

The V relay on my game also stays on until points are scored. I’m not sure if the rest of the diagram is the same without a schematic (should arrive next week). There is a white blue wire on the middle V relay switch. The wire on my thought switch is faded white. I’ll try continuity with my meter and see if it’s the same wire.

#8 4 months ago

I have continuity from trough switch to the V relay but still doesn’t subtract a ball.

Update. I get a continuity beep from the trough switch to nearly everything in the back box - z j v n m l relays. I’m officially totally lost!

#9 4 months ago

Read up on continuity vs. resistance in this forum. Continuity alone doesn't tell you much. Unless you can measure a resistance of about an ohm or less between two points the meter is probably detecting some other, parallel path through the circuit.

#10 4 months ago

I can hook a jumper to the blue white V relay switch, tap the other end of the jumper on the trough switch and it subtracts a ball each tap. Any suggestions from there? I’ve been through the Jones plugs twice cleaning.

#11 4 months ago
Quoted from hjh632:

I’m officially totally lost!

Haha, hang in there.
Yes, Freefall's Subtract Ball Count circuitry is the same as Capt. Card.
The V (1st Ball Relay) also needs to be energized so when the opening ball triggers
over the trough switch, it doesn't knock the opening ball down to the 4th ball..
The black/white wired switch in the V Relay goes to the Ball Count's Subtract Coil.
The red wire on the other V's switch of that set goes to one of the trough switches.
I'd almost have to think it's maybe one of the plugins. Maybe bad connection, fraid
wire, ect. You may want to do some jumping from those points mentioned.
The other trough switch goes to a common red/white..
btw: I'm not that far away, and have duplicate EMs. If you ever like to trade the Freefall,
I may have interest. I have a couple Freefalls, but neither are it great shape..

#12 4 months ago

Hey Mopar, good to hear from you - I often see your posts when I read the EM tech forum. I was afraid it was the Jones plugs, can’t think what else it could be...but the switch did work once right after I cleaned the v relay today. I will do some jumpering on both sides of the Jones plugs.

Trades could happen. Where you at? Answer by pm if you’d like, I notice you don’t have a location on you pinside info and probably want to keep it that way. Henry

#13 4 months ago

Henry, I can take a crate full of used rusty parts and make a ball bowler,
but laptop isn't anything that interest me, thus I suck at it and although I
gave it multiple attempts, I can't get my location to show up.
Anyways, I'm in Newark, N.Y. That's between Rochester and Syracuse.
I was thinking (actually wasn't thinking) and took it you were from Central
Square which is outside of Syracuse, but still, we're easily within' reaching
distance..
I'll shoot you a pm..

#14 4 months ago

I was lookin at that free fall just missed it lol she just sent me pics when I think you bought it good score man if it was the one in middleport she said just needs some rubbers of course

#15 4 months ago

Yup snowy, middleport. What a mess. Drop bank doesn’t reset, most of the lights were out, pop bumpers don’t score, 10s don’t register so no alternating drop and bumper lights. Gave up drinking 20 years ago but may have to rethink that!

#16 4 months ago

Sounds like bad rubber rings to me possibly blown flux capacitor change the ball fluid too and dear god man check the rubber rings!!

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