Logic Probe - special tool tips and tricks

A really handy tool for circuit board diagnostics and troubleshooting

[Nightshft]

I rarely do hardware repair (okay sometimes, but not often) and I know how to use multimeters and oscilloscopes. In a repair stream on twitch I saw someone using a logic-probe today and it's such a nice tool. For example I own an oszi, but it's a crt model, so it's quite big and therefore on a shelf 2m away from the workbench, just for space reasons. The small size of these logic probes is a BIG advantage. Thx for the nice explanation.

[retroamusementsnl]

Great video! Explains what a logic probe is in a nut shell. Yesterday I relied on the same model Logic probe to diagnose why the 6 digit displays were not working on my Gottlieb System 80 Counterforce. All of the MPU boards display section TTL chips tested fine. The connections were fine. Ended up being trouble on the power supply. A Zenner diode needed to be replaced. The displays then lit up like new. My DDM found the troubled component on the power supply but the Logic probe verified the circuit boards ic chips were functioning properly. A great tool for anyone repairing and troubleshooting their own circuit boards.

[pierpa_pierpaolo]

Which logic probe would you recommend for me to test these ICs : CA3130E, LM358, V4093D, GD4027B ? Thank you very much.

[namco]

I literally looked up one of these, a logic probe, on Amazon earlier. Trying to work on my Xenon pin, but I am also starting to work on arcade PCBs, so I figured something like this would be helpful. Now that I see how easy it is to use, i'm gonna order one. Thanks.

[chrish]

I have an Arduino, and I have a program loaded on it. It does what it’s supposed to what I have it hooked up to the computer via USB. But when I try to run it off of a 9 V battery, using the battery jack, it doesn’t work. Would a logic Pro be good to use in that instance?

[patkelley]

Just busting my logic probe out today. Just trying to get enough information on it before I start poking around. Good video!

[douglasbollinger]

Dumb question, but can you use these to work on cb radios to find things like why the radio doesn't have receive or transmit? Will it be able to tell where a certain circuit stops like a bad component?

[stanbecks]

i'd like to know what the input voltage for the probe is?

[ClbnaVGM]

Thanks for this video.
I try to understand what a logic probe does. If I'm right, it helps to see the states (LOW/HIGH) of a pin (below or above 5v)...ok.

Does this information helps for checking if an IC has a normal behaviour ?
How can you check for example if a Z80 dip 40 is OK ? Do you rely on reading "states" ?

[ShoaibAli-qibw]

Can it check the modern IC? Like computers etc

[simplelyf]

Cool helpful video, thanks for showing the clock signal, I’m gonna try that.

[larrygenedavis]

Can you check any i.c. without worry of damage ?

[dvgayle]

What if it's less than 5v but more than zero volts? The application is 12 volt automotive systems

[SimonBauer]

40 bucks, for the price of two logic probes you could get a whole oscilloscope these days...

[flightlieutenant]

Great video mate. Cheers from Australia mate 👍🇦🇺🇦🇺🇦🇺🇦🇺🇦🇺🇦🇺🇦🇺🇦🇺🇦🇺