Yeah, the M-Tester rocks. Did you ever look into its history? It's kind of interesting.
The Peak ESR70 is way, way overpriced but from what I've seen, it has similar in-circuit capabilities as the Capacitor-Wizard. That last 'Spare Time Repair' Bose Wave video really brought me over the edge.
Lazy me wants the chance to zero in on a suspicious cap on a board before desoldering it. Story of my life. Always looking for the easy way out. :)
No, I've never looked into where those came from...always assumed it was someone's "Well crap I can do this better" or a senior project somewhere.
Nothing wrong with not wanting to unsolder every part on the board...
It was created by a German guy active on the mikrocontroller.net forum. First iteration was called the AVR transistor tester (German): https://www.mikrocontroller.net/articles/AVR-Transistortester It was then expanded and extended: https://www.mikrocontroller.net/articles/AVR_Transistortester (Notice URL difference dash vs understroke)
Here's a summary in English https://arnowelzel.de/en/m-tester
nice...will take a look.
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