(Topic ID: 337613)

Gottlieb Flipper Clown not adding balls

By durriti

1 year ago



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  • 10 posts
  • 3 Pinsiders participating
  • Latest reply 1 year ago by durriti
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#1 1 year ago

Hello All,

Gottlieb Flipper Clown is not adding a ball when a preset score is reached, l've checked that the jones plugs and sockets which are clean and not loose. l still haven't found the schematic!, any ideas, thanks in advance.

#2 1 year ago

I'd suggest checking all the switches on the 100 point relay. The path to feed power to the Add coil on the Ball Count Unit must go through one of those switches.
.................David Marston

#3 1 year ago

Thanks, l'll look the switches.

#4 1 year ago
Quoted from durriti:

is not adding a ball when a preset score is reached

Does the Add Ball (K) relay activate when this happens?

#5 1 year ago

Lifting the playfield and looking at the 'K' relay. The short answer is no, the 'K' - add a ball relay doesn't activate when a preset score is reached and it doesn't activate when the right target is higher than the left target and when both are made either, but it the ball count unit does add a ball on the target side of the game.

#6 1 year ago
Quoted from durriti:

the 'K' - add a ball relay doesn't activate when a preset score is reached

Inspect and diagnose this circuit with Alligator clip jumper wires
pasted_image (resized).pngpasted_image (resized).png
https://pinside.com/pinball/forum/topic/gottlieb-big-shot-repair#post-6305153
http://www.planetimming.com/Pinball/troubleshooting/EM%20Troubleshooting.pdf
http://www.pinrepair.com/em/index3.htm#features
Example of a pinsider actually doing this https://pinside.com/pinball/forum/topic/red-baron-tech-question#post-5858156

#7 1 year ago
Quoted from dmarston:

I'd suggest checking all the switches on the 100 point relay.

Now that I see the excerpt of the schematic, I will amend that to relay Q. In later games, you could set the add-ball scores in multiples of 100, but this game only does multiples of 1000.

(Also, does that game have two switches at the 9th position of the Hundreds Unit? The excerpt doesn't show where 100s activate the 1000s reel. Two switches would put an unusual burden on the score reel advance.)
.................David Marston

#8 1 year ago

l set the game into play, ball served, score reels zero'd. red/white advance at zero position, extra ball set at 1000pnt. Using Aligator jump wires l started at the 'K' relay and jumped to main female jones plug in the head, tapped the 100 point p/field switch, nothing. zero'd 1000 score reel, Jumped further up to the female add a ball jones plug- 1000pnt position, tapped 100pnt p/field switch to 1000 pnts, nothing. Zero'd 1000 pnt score reel, jumped to thousands unit blk-red tab, tapped 100pnt p/field switch to 1000pnts, nothing. Zero'd 1000pnt score reel, jump to bl-red wire at 'Q' relay, tapped to 1000pnts and bingo. "k' relay, ball to play unit and animation all activate adding one ball but it does it for every thousand points on the 1000pnt score reel, nice but wrong.
l also de-soldered the or-grn wires at the 'k' relay attached aligator wire at that end, at the other end is the add a ball adjustment male jones plug, did a continuity test and it is good. This confirmed big jones plug connection is good, re-soldered or-grn wires.
My thoughts think its something in the 1000pnt score?.

#9 1 year ago

Also, does that game have two switches at the 9th position of the Hundreds Unit? The excerpt doesn't show where 100s activate the 1000s reel. Two switches would put an unusual burden on the score reel advance.

It does have two switches.

#10 1 year ago

Found the problem. The thousand point score reel has a printed circuit board and grounding wiper disc, the disc locates on cam and ratchet hub. The ratchet has three prongs, two small and one slightly bigger. When l serviced the score reels the grounding wiper was refitted 120 degrees out and hence no extra balls. The printed circuit board has five wires, these are straight from the add a ball adjustment jones plug. The game appears to award a ball at the correct settings.
Thank you for your input.

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