(Topic ID: 158809)

Monster bash opto switch not working

By crashnt20

3 years ago

Topic Stats

  • 4 posts
  • 2 Pinsiders participating
  • Latest reply 3 years ago by wallybgood
  • Topic is favorited by 1 Pinsider


Linked Games

#1 3 years ago

I have a monster bash that I have been restoring and I have a pretty good issue I can't figure out. Don't get me wrong I am still pretty new to the hobby but I think I did a fair job troubleshooting this one.

My opto switch does not register anything for the right popper.

I tried to swap out the opto switch from The outlane opto and still the same problem. the previous ones work at the outlane spot but not in the right popper.

I swapped the opto board with the exact same model board from medieval madness and same error.

I traced the wires to the opto board and they show a complete circuit to the opto board when using the multi-meter. I have replaced my CPU board with a brand new one from rotten dog.

Any advice?

#2 3 years ago


#3 3 years ago


#4 3 years ago

Hey Crash
With the swaps that you have done already I would still suspect a wiring/connector problem.
The first thing that I would do is make sure that you have 12VDC right at the Opto Photo receiver board (Black plastic base). Gray-Yellow wire. Then check the Blk wire at the LED Transmitter (White plastic base) for continuity to Ground.
Refer to Page 3-15 in the manual.
Then check continuity with game off the following: Orange wire at Opto photo receiver board to J2-2 pin at the 10 Opto Board and Gray wire at LED Transmitter board to J1-2 at the 10 Opto board.
Refer to Page 3-18 in the manual.
The right popper is switch #36.

Promoted items from the Pinside Marketplace
$ 259.95
Lighting - Led
Pin Stadium Pinball LEDs
8,750 (OBO)
Machine - For Sale
Upper Freehold, NJ
$ 299.99
Cabinet - Other
PinGraffix Pinside Shop
From: $ 40.00
Cabinet - Other
Rock Custom Pinball

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