(Topic ID: 263689)

Gottlieb 300 “runs too fast”


By Zog

83 days ago



Topic Stats

  • 32 posts
  • 8 Pinsiders participating
  • Latest reply 81 days ago by Zog
  • Topic is favorited by 2 Pinsiders

You

Linked Games

Topic Gallery

There have been 14 images uploaded to this topic. (View topic image gallery).

DelayModule (resized).jpg
Image 4 (resized).png
26F4CB0D-6FEC-4432-BACC-AEFA67D248D9 (resized).jpeg
0flippermarkt-Gtb-300-pic-02 (resized).jpg
0flippermarkt-Gtb-300-pic-01 (resized).jpg
F9415E73-157E-4C02-A5A9-CAF653081492 (resized).jpeg
781DE37B-31A6-459F-B622-6879528404C5 (resized).jpeg
9D140921-00F8-4EF5-B276-D03F7F8DCC31 (resized).jpeg
CD5C026B-5D1A-4B7C-AD87-D5C36FEADF6A (resized).jpeg
5F2CA9DB-CF9E-47CC-8D41-D761FC4141EE (resized).jpeg
0659FDBE-C9E0-43B0-82F5-F58A37421A0D (resized).jpeg
547AE81B-D072-4DE8-B400-4881EBC34C1A (resized).jpeg
2F10F12B-2161-4317-8A20-FBD57CE02481 (resized).jpeg
A9DFC117-0FAB-4DC0-842F-EAA884AE709D (resized).jpeg

#1 83 days ago

No other way to describe it. The scoring, chimes, backglass animation and ball return are much faster than what I see on Youtube.

Working on this for a buddy. It also doesn’t go to players 2 - 4.

The ball return doesn’t activate long enough to push the ball out. I’ll add a video of the issue.

Any ideas?

#2 82 days ago

I was waiting to see how the bonus was accumulated and the balls were kicked out, but the video ended too early.

Is the game perhaps a re-import?

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#3 82 days ago

Hi Chris. Thanks for the fast response.

It does release the backglass balls and add the bonus.

And yes, it’s a re-import.

A9DFC117-0FAB-4DC0-842F-EAA884AE709D (resized).jpeg
#4 82 days ago

I could see the score reels incrementing faster than normal.

I think you have a reimport that had a 50Hz motor. Of course, here in America, our power is 60Hz. The motor therefore runs about 20% faster.

Check the motor for a part number.

I saw a Hot Shot reimport ages ago. It cranked off bonus points like a machine gun. Cool effect if the mechanical parts can run at the increased speed.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#5 82 days ago

I'll take a look this morning and post it. Thanks again!

#6 82 days ago
Quoted from ChrisHibler:

I could see the score reels incrementing faster than normal.
I think you have a reimport that had a 50Hz motor. Of course, here in America, our power is 60Hz. The motor therefore runs about 20% faster.
Check the motor for a part number.
I saw a Hot Shot reimport ages ago. It cranked off bonus points like a machine gun. Cool effect if the mechanical parts can run at the increased speed.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

Yup. You nailed it. A re-import "Hot Shot" I had years ago had trouble counting by fives. It would often advance the score reels only four clicks. Another thing is, if he's watching a video from Australia or the UK, those machines usually run slower than normal, because they're using 50Hz for a 60Hz motor; the opposite of what he's experiencing.

#7 82 days ago

We should have a "motor exchange program" with EM pinheads in 50hz countries.

#8 82 days ago
2F10F12B-2161-4317-8A20-FBD57CE02481 (resized).jpeg
#9 82 days ago

I didn’t notice where the blue wire was prior to removing the motor. Where should it be?

547AE81B-D072-4DE8-B400-4881EBC34C1A (resized).jpeg
#10 82 days ago

Gottlieb B-11550 is a 50 Hz motor.

The blue wire connects to the jack with the yellow/red (YEL+RED) striped wire.

#11 82 days ago

60 Hz motor is B-7760

#12 82 days ago

If you are unable to source a replacement motor you can insert a 120 to 100 volt transformer. That should slow the motor down. An example:
amazon.com link »

#13 82 days ago

Thanks gang. I’m trying to locally source a B-7760.

Zog

#14 82 days ago

Some of the stickers are missing from the jumpers. Any idea what this one is?

0659FDBE-C9E0-43B0-82F5-F58A37421A0D (resized).jpeg5F2CA9DB-CF9E-47CC-8D41-D761FC4141EE (resized).jpeg
#15 82 days ago

zog , May I use the picture you posted of the bottom of the score motor for the PinWiki? Thanks!

https://www.pinwiki.com//wiki/index.php?title=EM_Repair#Gottlieb.C2.AE_Score_Motor_runs_too_fast_.28aka_Super_Fast_scoring.29
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#16 82 days ago

If you have the schematics, you'll be able to puzzle out what that 2 position plug does.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#17 82 days ago

I’ve ordered the schematics. Just waiting for them.

Yes, feel free to use any of the pics, Chris.

#19 82 days ago
9D140921-00F8-4EF5-B276-D03F7F8DCC31 (resized).jpegCD5C026B-5D1A-4B7C-AD87-D5C36FEADF6A (resized).jpeg
#20 82 days ago
781DE37B-31A6-459F-B622-6879528404C5 (resized).jpegF9415E73-157E-4C02-A5A9-CAF653081492 (resized).jpeg
#21 82 days ago

Hi Zog
I also am member in a german forum - here are pictures from that forum. Greetings Rolf

0flippermarkt-Gtb-300-pic-01 (resized).jpg0flippermarkt-Gtb-300-pic-02 (resized).jpg
#22 82 days ago
26F4CB0D-6FEC-4432-BACC-AEFA67D248D9 (resized).jpeg
#23 82 days ago

Hi Rolf. Any idea what that gizmo does?

#24 82 days ago

Found a 60hz motor!

#25 82 days ago

That gizmo is a capacitor that creates the pseudo-random time delay for the mystery hole. You need to replace that for correct operation.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#26 82 days ago
Quoted from Zog:

Found a 60hz motor!

Much better solution than dropping the voltage. I don't think that would slow down the motor at all, but would sure make the gameplay sluggish. I have a variac, and have experimented with lowered and raised line voltage. As long as the AC frequency is 60hz, the motor will run at the same speed. It's not a 110v motor. Runs on ~24V from the transformer.

#27 82 days ago

I'll try to get a part number for the capacitor.

#28 82 days ago
Quoted from jrpinball:

Much better solution than dropping the voltage. I don't think that would slow down the motor at all, but would sure make the gameplay sluggish. I have a variac, and have experimented with lowered and raised line voltage. As long as the AC frequency is 60hz, the motor will run at the same speed. It's not a 110v motor. Runs on ~24V from the transformer.

I tried it out with a variac too. I could get it to slow down a tiny bit but not enough to make up the difference between 50 and 60 Hz motors. Below 16-17 volts the motor wouldn't turn at all. Turning the voltage up only made it louder, not any faster. These induction motors aren't designed to have their speed controlled by varying the voltage.

/Mark

#29 82 days ago

Schematic below:

Image 4 (resized).png
#30 82 days ago

... and from the parts catalog, see image...

Also Rolf mentions it in another post:
https://pinside.com/pinball/forum/topic/transistors-in-em-games#post-5228858
DelayModule (resized).jpg

#31 82 days ago

It’s worth a shot to contact Steve Young for the capacitor assembly. If Steve doesn’t have it then building one would be simple.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#32 81 days ago

Managed to find the "gizmo" locally!

Thanks again, everyone.

Promoted items from the Pinside Marketplace
From: $ 18.00
Apparel - Men
Pinside Shop
$ 79.99
Cabinet - Armor And Blades
PinGraffix Pinside Shop
$ 40.00
Gameroom - Decorations
Arcade Arts
$ 229.99
Lighting - Other
Lighted Pinball Mods
$ 39.95
Playfield - Toys/Add-ons
Hookedonpinball.com
$ 35.00
Cabinet - Decals
Pinball Haus
$ 400.00
Boards
Great American Pinball
$ 3.50
Various Other Swag
UpKick Pinball
From: $ 99.99
From: $ 99.99
Cabinet - Other
Lighted Pinball Mods
$ 5,799.00
Pinball Machine
Great American Pinball
$ 154.00
Cabinet - Toppers
Id Rather Play Pinball
$ 3.00
Playfield - Decals
Doc's Pinball Shop
From: $ 129.10
Cabinet - Sound/Speakers
PinWoofer
$ 19.95
Playfield - Toys/Add-ons
ULEKstore
$ 25.00
Apparel - Unisex
T-shirt- Grey Color Out of stock
Project Pinball Charity
From: $ 119.99
Lighting - Backbox
Rock Custom Pinball
$ 90.00
Lighting - Under Cabinet
Rock Custom Pinball
From: $ 9.99
Eproms
Matt's Basement Arcade
$ 8,999.00
Pinball Machine
Classic Game Rooms
$ 15.00
Playfield - Decals
Metal-Mods
$ 24.00
Playfield - Other
Pin Monk
$ 74.99
Playfield - Toys/Add-ons
Lermods

Hey there! Got a moment?

Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside