(Topic ID: 145131)

Gottlieb System 1 chime issue


By chrisnack

3 years ago



Topic Stats

  • 14 posts
  • 6 Pinsiders participating
  • Latest reply 2 years ago by Insane
  • Topic is favorited by 2 Pinsiders

You

Linked Games

#1 3 years ago

Having trouble with the chimes on my Joker Poker. When the game first fires up, the chimes work great, after it's been on awhile, the chimes get very weak. If i swap in another chime unit from one of my other games, it seems to be ok (granted i haven't left it in there to see if it fade as well).

I've checked all the coil resistances and they look good. I replaced all the diodes with new ones. I also went through and did a full PBR chime rebuild kit. So short of replacing the coils themselves, i'm at a loss.

Just curious if anyone has seen that before, and if there is anything else i could try before i spend $30 or whatever on 3 new chime coils.

Thanks!

1 month later
#2 3 years ago

Did you ever really figure this out? I am having issues with a new JP project too, but mine don't work at all.

Power to the connector and the coil harness is 24.7 v
Coil resistance good at 24 ohms
Checked the driver board transistors, good - its brand new as well
I put my meter on the connector, and hits are registering in the harness. Although I couldn't get a consistent value holding it by hand
If I ground the coils to the ground strip on the bottom cabinet, the coils buzz but don't activate - is there a better place to ground it?

I don't mind swapping out the coils, but I don't understand why they don't work when the readings indicate they should. What am I missing?

#3 3 years ago

No haven't had time to really dig into it.

You should be able to ground the transistor and that will fire the cool. I assume you took the chimes apart and everything moves freely?

#4 3 years ago

Are you working with the original boards or reproductions? I would check the driver board or try to swap out boards. Isolate & eliminate the problem areas: the boards, the coils/diodes, the connectors.

#5 3 years ago

Yes, I have torn down the assembly and other than being dirty, the plungers move freely.

I started with an original board, but replaces it with a new Boston Pinball driver board.

I think I have tested every component separately, but they don't seem to work when assembled.
Hadn't tried to short the transistor yet since it was a new board, but will put it back together and try it.

#6 3 years ago

I rebuilt the chime unit and the knocker and everything works now. I guess I need practice at measuring coil resistance or something.

#7 3 years ago

OP...have you installed the ground updates to the board set?
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact/
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#8 3 years ago
Quoted from Black_Knight:

I rebuilt the chime unit and the knocker and everything works now. I guess I need practice at measuring coil resistance or something.

Saying you put new coils in?

#9 3 years ago
Quoted from ChrisHibler:

OP...have you installed the ground updates to the board set?
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact/
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info

I have pascal all-in-one boards...

#10 3 years ago

yes new coils and the rebuild kits from pbresource. works like a champ.

I don't have a tumbler yet so used some simple green and a scotch brite pad to clean up the housings and chimes. they are now the shiniest components in the pin and they sound great.

What i didn't like was the foam pad in the kit. i would prefer original grommets over the pad. I couldn't save mine because they were too dry.

I also reused all the plungers, c
just cleaned then with the scotchbrite too.

should have done this first, as i bought a driver board and didn't need it. anyone want a new one?

#11 3 years ago
Quoted from Black_Knight:

yes new coils and the rebuild kits from pbresource. works like a champ.
I don't have a tumbler yet so used some simple green and a scotch brite pad to clean up the housings and chimes. they are now the shiniest components in the pin and they sound great.
What i didn't like was the foam pad in the kit. i would prefer original grommets over the pad. I couldn't save mine because they were too dry.
I also reused all the plungers, c
just cleaned then with the scotchbrite too.
should have done this first, as i bought a driver board and didn't need it. anyone want a new one?

Ok sounds good, i did a full rebuild kit on my chime and i still have the issue. I redid all the diodes as well, so obviously it's the coils. I'll go ahead and order new ones.

I agree i don't care of the foam pad either, i like the original rubber grommets.

1 year later
#12 2 years ago

I am having a similar issue. The plunger would oscillate, and not hit the chime correctly. i pulled and cleaned everything. Measured the coils, they are fine. Replaced the diodes. Everything worked great for a couple of days. Now the 100's chime hardly rings at all, and the others, work sometimes. Thinking of replacing the coil sleeves. Trying to find out what the heck size the correct ones are supposed to be. Any other suggestions?

#13 2 years ago
Quoted from Insane:

I am having a similar issue. The plunger would oscillate, and not hit the chime correctly. i pulled and cleaned everything. Measured the coils, they are fine. Replaced the diodes. Everything worked great for a couple of days. Now the 100's chime hardly rings at all, and the others, work sometimes. Thinking of replacing the coil sleeves. Trying to find out what the heck size the correct ones are supposed to be. Any other suggestions?

The plungers rest a a foam bar strip, it gets worn and loses its depth/ thickness. Change the foam strip out on each plunger. They pit over time and then the plunger can't reach as high when activated. Only suggesting because it was the solution for me.

#14 2 years ago
Quoted from gjm:

The plungers rest a a foam bar strip, it gets worn and loses its depth/ thickness. Change the foam strip out on each plunger. They pit over time and then the plunger can't reach as high when activated. Only suggesting because it was the solution for me.

I had replaced the foam strip, but when i disassembled again, i found that the new foam was already beat to hell. So i replaced and put in 3 layers, now the chimes work awesome.

Promoted items from the Pinside Marketplace
€ 8.40
From: $ 18.00
Apparel - Men
Pinside Shop
From: $ 40.00
Cabinet - Other
Rock Custom Pinball
$ 50.00
$ 49.00
$ 3.00
Various Other Swag
Project Pinball Charity
$ 14.95
Playfield - Toys/Add-ons
ULEKstore
From: $ 175.00
Gameroom - Decorations
Pinball Photos
$ 42.99
Lighting - Interactive
Lee's Parts
$ 5,799.00
Pinball Machine
Classic Game Rooms
$ 22.00
Cabinet - Sound/Speakers
ModFather Pinball Mods
$ 5,799.00
Pinball Machine
Great American Pinball
$ 249.99
Cabinet - Armor And Blades
Great American Pinball
£ 75.00
Playfield - Toys/Add-ons
PinballToys
$ 41.25
Playfield - Toys/Add-ons
The MOD Couple
$ 11.95
$ 18.99
$ 69.99
Playfield - Toys/Add-ons
Lighted Pinball Mods
From: $ 30.00
Lighting - Interactive
Pinball Z

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