(Topic ID: 242960)

What on earth is this? It works though!

By honkbahh

2 years ago


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  • 11 posts
  • 8 Pinsiders participating
  • Latest reply 2 years ago by pinballdaveh
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#1 2 years ago

Ahoy! Short story long I got a nonworking Gottlieb The Games and have been poking with a multimeter for a while trying to get it to work. Finally when following power from the on/off switch towards the coin door I found this black box with electrical tape all over it. I finally noticed some of the tape was covering a button. I pushed the button and it sprang to life!

So my question is what is this thing, and should I do anything with it/to it? The button appears to be taped down, but the tape gave way.

Thanks all!

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#2 2 years ago

That looks like an interlock switch. They are usually found in arcade machines to cut the power when the cabinet is opened. You should be able to pull the button out to activate instead of taping it down. Not sure why it would be in a pinball machine.

#3 2 years ago
Quoted from alexred:

Not sure why it would be in a pinball machine.

It's a standard feature on gottlieb games starting in the 80s up through their last game.

Other manufacturers just used a momentary switch to cut solenoid power in games from the DMD era.

#4 2 years ago
Quoted from alexred:

Not sure why it would be in a pinball machine.

Pinball machines have them on the coin doors too. Mostly the DMD era. Cut power to high power like coils and flashers to lessen the chance of shorting high power to low power circuits like your switch matrix or lamp matrix.

Some of the later Gottliebs kill the main power when you open the coin door.

LTG : )

#5 2 years ago

So at some point it just fell off and someone taped the button? I guess I’ll look for where it used to be mounted, or if it is even mountable?

#6 2 years ago
Quoted from honkbahh:

So at some point it just fell off and someone taped the button? I guess I’ll look for where it used to be mounted, or if it is even mountable?

It's fairly common for people to modify this switch so that the game doesn't turn off when the coin door is opened.

Normally, it's screwed down, and the button faces the opening of the coin door, and a bracket on the coin door pushes against the switch.

The simplest way to bypass it I've seen is just to rotate the housing 90 degrees and pull the stopper (switch button) out. I'm guessing that the person who taped it up wasn't aware that it could be pulled out to set it in the "on" position.

#7 2 years ago

What is it with The Games and weird power switches? Looked at one last week with the power switch bypassed so it turned on when you plugged it in. Reconnected the power switch and it worked fine.

#8 2 years ago
Quoted from Cheddar:

What is it with The Games and weird power switches?

Nothing wrong with the switches. Somebody did that. Why, we may never know.

LTG : )

#9 2 years ago

Interesting. I never noticed one in my Raven, which stays on when the door's opened. I'll have to take a look out of curiosity.

#10 2 years ago
Quoted from Topher5000:

Interesting. I never noticed one in my Raven, which stays on when the door's opened. I'll have to take a look out of curiosity.

Raven and all of my 80B's don't have them.

#11 2 years ago

I think Atari was the first to use the door interlock switch on their pinball machines.

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