Hello All,

I have a switch on my Stern Austin Powers which is not registering on the switch test. The switch in question is # 38, which is the right roll under switch (right ramp exit).

As mentioned, I cannot get this switch to register on the switch test. Now I can get switch # 34 to register and this is in the same column as my non-registering switch. I can also get switch # 6 (left coin slot) to register which is in the same row.

I disconnected the switch (#38) where it plugs into the wiring under the playfield and shorted the two connector pins out and still no confirmation of a switch closure being seen by the CPU.

This is where I need to have some help fro those far more skilled at this than I.

Appreciate all assistance. Thank you

George...

I think I understand your suggestion and when I do this, I cannot get continuity in either wire? This makes me think I may be doing something in error as it seems hard to believe that both wires would not have continuity.

I could be totally out in left field here but how about this as a possible troubleshooting idea. Using a jumper wire, connect the two wires in the non registering switch directly to the appropriate colors on a known working swicth and then rerun the test and see if the cpu will then register the switch closure. I would think at this point provided this resulted in the cpu seeing the switch that there is a snafu in the wiring harness somewhere. What ya think??

Thank you Zacaj

So let me make sure I understand you. Connect The like colored wire from the switch to the row on a known working switch and the like colored wire on the column to a known working switch and then see if that switch is recognized by the machine. Sound right?

Ok, stupid question. If I put a volt ohmmeter across that switch, should I see a dead short when the switch is closed

Sorry. The diode is throwing me for a loop. Would think that I should see 0 ohms when the switch is closed and infinite ohms when open. Right??

Thanks for hanging with me zacaj

Placing the ohmmeter on the two wires coming from the switch. Closed, the meter should read 0 and open the switch should read infinite. Correct

Ok. Understood. There is a common on the switch and a normally open and normally closed. The switch is operating correctly

This is where the switch ties into the playfield wiring. It changes to an orange and lighter guage blue. Just FYI

image (resized).jpg

I don't know. I think I'm going to make a call to Stern on Monday and see if they can help me with this. The switch is definitely fine. And all other switches appear to be working so I'm hesitant to start swapping connectors for fear of making the situation worse

Job to y

Very possible as the connectors are the same. I will look at this when I get home and report. Thank you very much

Meant to say Hello tony. Sorry. Auto correct

And the prize goes to tonyhoff1. You were dead in. Somehow at some point those two connectors got transposed. I switched them and now all is well. Thank you very much tony and Zacag for all your kind help. I am grateful

George