yeah... i saw that but i'm not sure if they're bad or not... maybe one of them is or all four... i just don't know... maybe they're all good... i just don't know of a way to test them...
Is the thing working at all? Are any of the components at all visibly damaged? Are any of the wires torn off? Are any of the PCB traces cut?
If you answered no to the preceding questions, then it could be a chip, and you should probably just buy a few to have them around anyways