I ordered a few chips from China cheap. The seller indicated that it is the original MSI chip. I modelled the circuit twice, one in the project I need it for, another on breadboard. So far all the chips I got refuse to work. Output is just noise that doesn’t change, not even in regards to input.
I told the seller that now I’m getting the same chip from the reputable source and if it works I will be starting a dispute, to which seller immediately replied that they are happy to refund everything. But I want to be sure this is not me doing something wrong. So how do you tell it is a fake?