This is sort of testing the waters, and it only works if you caught the company during a management push for customer satisfaction.

Call whoever it is up and see if you can get a Tech guy to agree to at least inspect it and give his opinion on what happened.

Once the part is in their hands, it becomes "chicken or the egg" and they may agree to replace it for goodwill
based on the part potentially being at fault.

If you aren't lucky and their budget is pulled or frozen, they will just tell you to not waste your time sending it.

If they won't agree to an inspection, ain't no way they will agree to a replacement.



Comp is generally not too bad to deal with.