(Topic ID: 266137)

Stranger Things eternal ball trough jam

By skondris

3 months ago

Topic Stats

  • 7 posts
  • 4 Pinsiders participating
  • Latest reply 3 months ago by skondris
  • No one calls this topic a favorite


Linked Games

#1 3 months ago

I have a new ST that has an eternal ball trough jam registering. In the switch test, it says "trough jam" and all the switches are listed as closed resulting in the machine forever firing the trough coil to kick out balls. This is a follow up issue after the original issue of node board #8 failing during the middle of a game. I verified that node board #8 was no longer working after isolating that from everything else. I swapped out the same board from my JP Pro and everything appeared to boot up fine and work, but then as soon as I started a game, the machine ejected every ball and kept firing the ball trough eject coil.

The opto boards appear to be working fine on their own, each opto blinks as a ball is dropped into the trough etc, but the diagnostic switch test says "trough jam" and all switches are registering as closed. Not sure what is making the switches show as closed. :/

any help on how I can narrow this down to what the real cause is?

#2 3 months ago

you check to see if anything is physically stuck in the trough? screw, bulb, etc...

#3 3 months ago

yep, all clear.

#4 3 months ago

Likely your trough boards are fried. When node 8 or 9 fails it can take all the daughter boards down with it.

Are all the light boards that are attached to node 8 working correctly?

#5 3 months ago

Good question, I'll have to look closer, I didn't think to check the lights closely, seemed like everything was fine, but I'll try swapping the Trough boards and will double check the others, thanks

#6 3 months ago

Are the dip switches on the new node board you brought in correct?

#7 3 months ago

Thanks everyone, turns out the opto boards were fried as well. I replaced them with boards from my deadpool and everything is working fine.

Promoted items from the Pinside Marketplace
5,899 (Firm)
Machine - For Sale
Oakland, NE
$ 54.99
Cabinet - Shooter Rods
Lighted Pinball Mods
$ 9,099.00
Pinball Machine
Classic Game Rooms
$ 27.95
Playfield - Toys/Add-ons
$ 279.95

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