(Topic ID: 280002)

Strange TZ Issue

By Tlamb

3 years ago

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  • 4 posts
  • 2 Pinsiders participating
  • Latest reply 3 years ago by Tlamb
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#1 3 years ago

I’ve never had this happen before so I wasn’t sure how to best approach it.

I have something strange going on with the switch matrix. When I’m in edge test, I press the “center trough” switch but it registers “trough prox” instead. Also the same for the next switch , “left trough” it registers “ball shooter”

So switch 16 triggers 26 and 17 triggers 27.

In single test mode, 16 and 17 do not register though 26 and 27 do. Both 16 and 26 register under test for 26, same for 17 and 27.

Everything seems to be wired correctly. Unless I’m missing a short or maybe clipped or melted a wire but I’m thinking it might be CPU, I’m just not too familiar with how to test the CPU unfortunately.

Any direction would be greatly appreciated. Thanks!

5D9074A0-0957-4021-AEB6-6823841850C2 (resized).jpeg5D9074A0-0957-4021-AEB6-6823841850C2 (resized).jpeg

#2 3 years ago

I tested pins at the CPU, they test correctly. I guess maybe it could be bad diodes? Seems strange that it would be two. I traced harness, I didn't see anything that looked to be wired wrong.

#3 3 years ago

I’ve heard bad diodes can cause that issue.

#4 3 years ago

Got this one figured out. It was a jumper that I wired incorrectly to the wrong switch.

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