I have searched (fairly extensively) and I can't find a similar thread..
I just bought a TL866II, from the legit website, and I have installed the software and got it running (full disclosure, using wine on Linux). It self tests OK.
I can stick random 74 series chips in it, and use the "Auto find" in the Device|Logic IC test screen. It detects them correctly, every time.
When I then select them in the list, and run a test, they fail.
This seems fishy. I did salvage all these chips, so they may be faulty, but I find it hard to believe they all are, and that it could auto detect them correctly every time, ie based on gates/logic, but then they fail when you test them specifically based on the model printed on them.
Anyone seen anything similar?