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Inexpensive Logic Analyzer for Lisa Troubleshooting - Suggestions Wanted

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sigma7:
Periodically we see requests for component-level troubleshooting help, and we get only so far requesting voltmeter measurements before many (appear to) give up. It isn't surprising given the amount of time it takes.

Now that there are inexpensive logic analyzers, perhaps it is time to have a standard recommendation list for what to buy to make component level troubleshooting more practical and efficient. Or perhaps the inexpensive options are still not good enough, I don't know. Hence the question:

Can you recommend a particular brand/model of inexpensive logic analyzer that would be suitable to suggest to inexperienced but enthusiastic Lisa troubleshooters?

I suppose a list of ones that are NOT suitable would be useful too.

Thanks for your suggestions!

sigma7:
Perhaps other forums have gone through or started this process already... please post a link if you know of any!

sigma7:
The $20 SparkFun TOL-18627 looks like a contender, anyone have experience with it?

It looks like there is a plethora of listings for things looking like that on AliExpress... perhaps all the same, perhaps not?

If not that, perhaps this list has some possibilities:

https://sigrok.org/wiki/Supported_hardware#Logic_analyzers

Worldwide availability would be important aspect.

bmwcyclist:
I haven't gotten any deeper than using a volt/ohm meter until I got myLisa.

A close friend of mine has one of these, but I haven't had time yet to check to see if it tests any chips at the LISA has.

https://8bit-museum.de/hardware-projekte-chip-tester-english/

On his recommendation, I have purchased one of these but again on the limited time I have I don't fully know how to use it yet.

diymore LCR Meter Transistor... https://www.amazon.com/dp/B0CGRRN7SW?ref=ppx_pop_mob_ap_share

sigma7:

--- Quote from: bmwcyclist on March 21, 2025, 04:26:54 pm ---A close friend of mine has one of these, but I haven't had time yet to check to see if it tests any chips at the LISA has.

https://8bit-museum.de/hardware-projekte-chip-tester-english/

--- End quote ---

It looks like the list of supported ICs covers nearly all of the chips in the Lisa.

However, since the Lisa's chips are soldered in, removing them to troubleshoot a problem is (I think probably) more work than isolating a problem with in-circuit test equipment and removing only the primary suspects, at which point swapping them with new parts is practical.

So although potentially useful, I would prioritize some other equipment first for Lisa troubleshooting.

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