(Topic ID: 83320)

How do I use a logic probe to check IC?

By dieseldogpi

10 years ago



Topic Stats

  • 4 posts
  • 4 Pinsiders participating
  • Latest reply 10 years ago by Pbpins
  • Topic is favorited by 3 Pinsiders

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#1 10 years ago

Working on my Bally Dungeons and Dragons (6803) and I need to check if one of the ic's is working. I do have a logic probe... But I never learned how to use it...I read a thing on or two... But I couldn't wrap my head around it. Any guidance.

#2 10 years ago

Only test on circuits 0-5v

Red clip goes to 5v
black to ground
Poke at things to see if it is changing between 0-5v

There are some guides around Google and such

http://wiki.arcadeotaku.com/w/Logic_Probe_Guide

#3 10 years ago
Quoted from dieseldogpi:

Working on my Bally Dungeons and Dragons (6803) and I need to check if one of the ic's is working. I do have a logic probe... But I never learned how to use it...I read a thing on or two... But I couldn't wrap my head around it. Any guidance.

It helps me to look up the datasheet for the IC so you can tell whats supposed to be happening.

#4 10 years ago

Pulsing if line is a clock

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