Youtube? How to use a logic probe?

Anyone know of any really good youtube videos on how to use a logic probe?

You mean how to physically us it or how to understand the process of troubleshooting a board by using one?

I did a video a while back where I repaired my X-men PCB using nothing more than a logic probe and a TTL databook.


If people are really interested I could go over the process of debugging TTL logic using a logic probe in combination with a set of schematics.
 
If people are really interested I could go over the process of debugging TTL logic using a logic probe in combination with a set of schematics.

Yes. I am all in favor of this. I have really learned a lot from your previous videos and this would be a good topic. Thanks for all the work you do.
 
It's tough to do something like this. You have to assume SOME level of understanding to do this sort of tutorial. Otherwise you get stuck in an endless digression:

How to use a logic probe... Basic microprocessor system architecture... How to read schematics... Digital electronic components and logic...Understanding binary and hexadecimal... Basic electrical theory...
 
For example, can this be done with the board out of the game on a bench (demonstrating how to hook up the necessary power to the board to use the probe).

It really has to be - unless you really like crouching on the floor behind a game with a flashlight trying to probe signals on the board, while it's still inside the cabinet, and can't easily be rotated because the cables are too short.

The actual operation of the logic probe itself is super simple. It's understanding what you're probing that's key. As Darren points out, you need to already understand all the basics before you can really make use of the logic probe. Things like "what all the components do", "what a TTL gate is", "how to read a schematic", "basic DC power", etc.

And pretty much any board level repair beyond replacing obviously failed chips and parts requires a test rig setup on a workbench. You really need to build that before you can get good use out of a logic probe, oscilloscope, etc. You need to be able to easily see and access and comfortably work on the board you're trying to fix.

-Ian
 
It's tough to do something like this. You have to assume SOME level of understanding to do this sort of tutorial. Otherwise you get stuck in an endless digression:

How to use a logic probe... Basic microprocessor system architecture... How to read schematics... Digital electronic components and logic...Understanding binary and hexadecimal... Basic electrical theory...


Exactly... so if I make one I'll have to start there. Basic intro to boolean logic, gate type identification (schematics) and looking up behavior in TTL databooks to understand basic function. You can get pretty far with just that alone.
 
You mean how to physically us it or how to understand the process of troubleshooting a board by using one?

I did a video a while back where I repaired my X-men PCB using nothing more than a logic probe and a TTL databook.

If people are really interested I could go over the process of debugging TTL logic using a logic probe in combination with a set of schematics.

Great tutorial. Hope to see more. Maybe you could show how to hook it up and some basic use for it.
 
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