Re: I found it! A very sorry looking MK14.
That's a good question !.
I've got three 7442's, all test as BAD, and all behave same in Vicky.
I tested a few other of my stock of chips, simple gates mostly, and found a faulty 7404. Other 7404s test OK, so I know the TS200 can tell the difference in simple gates.
It does seem strange that three 7442s all tested bad, so I've not binned them yet !.
Cheers,
Buzby
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